

15+ Exciting C Projects Ideas With Source Code
Introduction, c projects for beginners, simple calculator, student record management system, mini project for phone book, unit converter project, intermediate c projects with source code, mini voting system, tic-tac-toe game, matrix calculator, library management system, electricity bill calculator, movie ticket booking system, advanced c projects with source code, snakes and ladders game, lexical analyzer, bus reservation system, pac-man game, other project ideas, frequently asked questions, additional resources.
If you are looking for project ideas to enhance your C Programming skills, you are at the right place. Programming is more about what you can figure out than what you know. With the technology landscape continually changing, problem-solving is the one skill that allows you to navigate through innovations while also evolving. Start with C, the language using which most of the current programming languages are derived, to sharpen your essential programming skills and develop problem-solving abilities. C is widely used in practically every field and is regarded as the best language for novices, despite the fact that it was first introduced 50 years ago. This raises the question of what C is and why it is still so popular.
The C programming language is a procedural programming language. Dennis Ritchie created it as a system programming language for writing operating systems. Low-level memory access, a small collection of keywords, and a clean style are all qualities that make C language excellent for system programmings, such as operating system or compiler development. C quickly established itself as a powerful and reliable language in the software development area, with some of the most well-known names still linked with it today. C is used to create Microsoft Windows, Apple’s OS X, and Symbian. The C programming language is also used by Google’s Chromium, MySQL, Oracle, and the majority of Adobe’s apps. It also plays an important role in our daily lives, as most of the smart devices we use today are powered by C-programmed technology.
Let’s see what are the features that make C a popular and demanded language.
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- Flexibility – The seamless flexibility it offers in terms of memory management and allocation is one of the key reasons why C is so extensively used. Programmers have complete control over how they allocate and reallocate memory, resulting in increased efficiency and improved optimization. The C programming language provides several functions for memory allocation and management like calloc(), malloc() etc.
- Portability – C continues to be a very portable assembly language. It comes with numerous libraries that improve its functionality and allow it to work with practically any processor architecture. Compilers, libraries, and interpreters for a variety of other programming languages are typically written in C. This enables more efficient computation and accessibility.
- Simplicity – C is classified as a mid-level language, which implies it has characteristics of both high-level and low-level languages. It’s straightforward to understand and use as a result of this. It also helps users to break down code into smaller, more legible parts because it is a structured programming language.
- Structured Language – C is a structured programming language in the sense that functions can be used to break down a program into smaller chunks (functions). These functions also allow you to reuse code. As a result, it is simple to comprehend and work on.
- Memory management – C supports dynamic memory allocation (that is, allocation of memory at runtime). We can free the allocated memory at any time in the C language by using pre-defined functions.
- Speed – There is no denying the fact that the compilation and execution time of the C language is fast since there are lesser inbuilt functions and hence the lesser overhead.
Compiled language – A Compiler is used in the C language to compile the code into object code, which is nothing more than machine code that the computer understands. You can split your code into many source code files in the C programming language. The files will be compiled individually and then linked together for execution.
We’ll look at some intriguing C projects that you may find on GitHub in this article. We believe that these project ideas will assist you in improving your problem-solving abilities, broadening your knowledge base, and enriching your learning experience. Mini projects, mini-games, and little apps are among the C projects described here. The majority of these programs make good use of functions, file handling, and data structure. Analyze and comprehend the source code of these projects, and you’ll be able to develop a similar project by learning how to add, modify, view, search, and delete data using files.
You can build a simple calculator with C using switch cases or if-else statements. This calculator takes two operands and an arithmetic operator (+, -, *, /) from the user, however, you can expand the program to accept more than two operands and one operator by adding logic. Then, based on the operator entered by the user, it conducts the computation on the two operands. The input, however, must be in the format “number1 operator1 number2” (i.e. 2+4).
Source Code – Calculator
Using C language, you can also create a student management system. To handle students’ records (like Student’s roll number, Name, Subject, etc.) it employs files as a database to conduct file handling activities such as add, search, change, and remove entries. It appears a simple project but can be handy for schools or colleges that have to store records of thousands of students.
Source Code – Student Management
If you have ever lost track of which day of the week is today or the number of days in that particular month, you should build a calendar yourself. The Calendar is written in the C programming language, and this Calendar assists you in determining the date and day you require. We can implement it using simple if-else logic and switch-case statements. The display() function is used to display the calendar and it can be modified accordingly. It also has some additional functions. The GitHub link of the calendar has been provided below.
Source Code – Calendar
This Phone book Project generates an external file to permanently store the user’s data (Name and phone number). The phone book is a very simple C project that will help you understand the core concepts of capacity, record keeping, and data structure. This program will show you how to add, list, edit or alter, look at, and delete data from a record.
Source Code – Phone Book
Forgot how to convert degree Fahrenheit to Celsius? Don’t worry. We have a solution for you. This unit converter converts basic units such as temperature, currency, and mass.
Source Code – Unit Converter
An online voting system is a software platform that enables organizations to conduct votes and elections securely. A high-quality online voting system strikes a balance between ballot security, convenience, and the overall needs of a voting event. By collecting the input of your group in a systematic and verifiable manner, online voting tools and online election voting systems assist you in making crucial decisions. These decisions are frequently taken on a yearly basis – either during an event (such as your organization’s AGM) or at a specific time of the year. Alternatively, you may conduct regular polls among your colleagues (e.g. anonymous employee feedback surveys).
With this voting system, users can enter their preferences and the total votes and leading candidate can be calculated. It’s a straightforward C project that’s simple to grasp. Small-scale election efforts can benefit from this.
Source Code – Voting System
Tic-tac-toe, also known as noughts and crosses or Xs and Os, is a two-person paper and pencil game in which each player alternates marking squares in a three-by-three grid with an X or an O. The winner is the player who successfully places three of their markers in a horizontal, vertical, or diagonal row. You can implement this fun game using 2D arrays in the C programming language. It is important to use arrays while creating a Tic Tac Toe game in the C programming language. The Xs and Os are stored in separate arrays and passed across various functions in the code to maintain track of the game’s progress. You can play the game against the computer by entering the code here and selecting either X or O. The source code for the project is given below.
Source Code – Tic Tac Toe
Mathematical operations are an everyday part of our life. Every day, we will connect with many forms of calculations in our environment. Matrices are mathematical structures in which integers are arranged in columns and rows. In actual life, matrices are used in many applications. The most common application is in the software sector, where pathfinder algorithms, image processing algorithms, and other algorithms are developed. Some fundamental matrix operations are performed in this project, with the user selecting the operation to be performed on the matrix. The matrices and their sizes are then entered. It’s worth noting that the project only considers square matrices.
Library management is a project that manages and preserves electronic book data based on the demands of students. Both students and library administrators can use the system to keep track of all the books available in the library. It allows both the administrator and the student to look for the desired book. The C files used to implement the system are: main.c, searchbook.c, issuebook.c, viewbook.c, and more.
Source Code – Library Management
The Electricity Cost Calculator project is an application-based micro project that predicts the following month’s electricity bill based on the appliances or loads used. Visual studio code was used to write the code for this project. This project employs a multi-file and multi-platform strategy (Linux and Windows). People who do not have a technical understanding of calculating power bills can use this program to forecast their electricity bills for the coming months; however, an electricity bill calculator must have the following features:
- All loads’ power rating
- Unit consumed per day
- Units consumed per month, and
- Total load calculation
Source Code – Electricity Billing
The project’s goal is to inform a consumer about the MOVIE TICKET BOOKING SYSTEM so that they can order tickets. The project was created with the goal of making the process as simple and quick as possible. The user can book tickets, cancel tickets, and view all booking records using the system. Our project’s major purpose is to supply various forms of client facilities as well as excellent customer service. It should meet nearly all the conditions for reserving a ticket.
Source Code – Movie Ticket Booking
Snakes and ladders, also known as Moksha Patam, is an ancient Indian board game for two or more players that is still considered a worldwide classic today. It’s played on a gridded game board with numbered squares. On the board, there are several “ladders” and “snakes,” each linking two distinct board squares. The dice value can either be provided by the user or it can be generated randomly. If after moving, the pointer points to the block where the ladder is, the pointer is directed to the top of the ladder. If unfortunately, the pointer points to the mouth of a snake after moving, the pointer is redirected to the tail of the snake. The objectives and rules of the game can be summarized as-
Objective – Given a snake and ladder game, write a function that returns the minimum number of jumps to take the top or destination position.
You can assume the dice you throw results in always favor of you, which means you can control the dice.
Source Code – Snakes and Ladders
The Lexical Analyzer program translates a stream of individual letters, which are generally grouped as lines, into a stream of lexical tokens. Tokenization, for example, of source code words and punctuation symbols. The project’s main goal/purpose is to take a C file and generate a sequence of tokens that can be utilized in the next stage of compilation. This should also account for any error handling requirements that may arise during tokenization.
Source Code – Lexical Analyzer
This system is built on the concept of booking bus tickets in advance. The user can check the bus schedule, book tickets, cancel reservations, and check the bus status board using this system. When purchasing tickets, the user must first enter the bus number, after which the system will display the entire number of bus seats along with the passengers’ names, and the user must then enter the number of tickets, seat number, and person’s name. We will be using arrays, if-else logic, loop statements, and various functions like login(), cancel(), etc. to implement the project.
Source Code – Bus Reservation System
This little project is a modest recreation of the Offline Google Chrome game Dinosaur Jump. The game can be played at any moment by the user. The entire project is written in the C programming language. The X key is used to exit the game, and the Space bar is used to leap. play and score as many points as you can; this is a fun, simple game designed specifically for novices, and it’s simple to use and understand.
Source Code – Dino Game
Pacman, like other classic games, is simple to play. In this game, you must consume as many small dots as possible to earn as many points as possible. The entire game was created using the C programming language. Graphics were employed in the creation of this game. To create the game, you have to first define the grid function to manage the grid structure. To control the movement, you can define functions such as move_right(), move_left(), move_up() and move_down(). C files to add ghosts and their functionalities, positions check, etc. can be added to make the game more fun. The customers will find this C Programming game to be simple to comprehend and manage.
Source Code – Pac Man
Some project ideas are given below. These are just ideas, source code links for these have not been provided.
- Bank management system
- Airlines reservation system
- Vaccine registration portal
- A calculator
- Tic toe game
- Password management system
- Phone book management system
- Snake and ladders game
- Rock paper scissor game
- Unit conversion system
- Tip calculator
- Employee information management system
- Library management system
- Mini voting system
- Vaccine registration system
- Cricket Scorecard management system
- Hangman game
- Pac-Man game
- Grocery list
- Medical store management system
- School billing system
- Student record system
- Typing tutor
- Traffic control management system
- Telephone billing system
- Hotel accommodation system
We collected some C language projects and ideas for you in this article. GitHub has established a huge collection of projects from programmers who routinely examine and critique each other’s codes as the world’s largest software development community. Furthermore, because the platform supports many programming languages, there are a plethora of C project ideas on GitHub for anyone to get ideas from. As the developer, it’s up to you to think outside the box, come up with inventive solutions using available resources, and contribute to the future of software. For the benefit of clarity, the projects/software are grouped into distinct headings. So, if you’re new to project development, start by understanding and analyzing a tiny project before going on to a project with a broader scope and application.
Q. Is C good for big projects? A. C is indeed suitable for large projects. Programming in C requires a great deal of discipline than most modern programming languages. C aids in the learning of programming fundamentals, and because it is a procedural language, it necessitates a large amount of hard code in comparison to its competitors.
Q. Can you program games with C? A. The C programming language can be used to create games, however, most people choose to choose other languages.
Q. Is C still used today? A. Yes, C is still one of the most popular programming languages today.
Q. What should I build in C? A. Start with a little project to understand and analyze before moving on to a project with a larger scope and applicability if you’re new to project development. Some project ideas along with their source code are given in this article.
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Top 20 c programming projects for beginners.
C is a very basic programming language and suitable for beginners. It is the most popular procedure-oriented language for freshers. Every Computer science-related student must know the basic applications of C language.
Start your journey with practical knowledge of C. Skyfi Labs provides a list of top 20 projects using C for beginners. These projects give you better problem-solving knowledge and also will add more value to your resume.
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What is C programming used for?
- Computation Platform- C programming is used in mathematics for faster calculation. It is also used in the data structure.
- Embedded System- C language is used for machine-level or hardware programming. Embedded C is widely used for most of the IoT devices.
- Developing a new language- PHP, C++ is the programming language based on the C language.
- Operating System- C language is one of the important parts of the development of many OS. The major part of android operating systems developed by using C language.
- Games and entertainment- C language is an entertainment purpose for developing games like chess etc.
You can also read - List of Latest C/C++ mini-projects for beginners
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20 Best C programming projects for beginners
Below are some C programming projects that you can develop as a beginner to gain more C programming skills:
1. Bank Management System
In this C programming project, You will learn and create your account and manage it with simple C language codes. File handling is used to store data and user information. Functions are used for better understanding. This project will help you to clear your programming concepts.
2. Diary management System
It is a basic C project that helps you to save your personal information with file handling. Users can protect their diary with a password. This project consists of pointers and functions for better understanding.
3. Calendar using C
This is a very simple mini project using c programming. You will create a monthly calendar with days and dates. You can use a turbo C compiler for the better handling of the codes.
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4. Contact Management System
In this C project, users can save the contact and can also edit and delete it. It's like a phone book application. File handling is used to store the data. It also uses data structure to save the contacts etc.
5. Library Management System
The Library Management system is a basic C project. You can save the name of the student with the date of issue and author of the book. It also provides a facility to allocate no. Of the books that students can issue.
6. Snake Game
This is a simple snake game. GOTO function is used for movements of a snake. ⬆,➡,⬇,⬅ arrows used to control the snake. You can save gaming score with file handling concept.
7. Bus Reservation system
In this C project, you will learn to create a system that can reserve seats. It will also help to find the availability of seats and find the booking information too. It is one of the most popular and useful c projects where file handling is used to store the data.
8. Customer Billing system
The customer billing system is especially useful for cafes, stores and malls. You can keep a record of the customer name, amount due, the amount paid, mobile number with purchased items.
9. Hospital Management system
This C project is the same as a customer management system. You can save the information of patients, disease-related information with appointment time etc. It is a very simple project based on file handling for storing the data.
10. Cyber management
The beginner C project is especially for cyber cafes and computer centres. It helps to provide access to the user such as login etc. There are two parts of the project I.e. client and server. The server is for managing client requests. Client for giving access to client services. It has two source codes. It's a bit complicated but easy to understand.
11. Cricket score display
It consists of the runs made by batsman, wickets and number of balls played which will display on the screen. Along with this, it also displays the name of the batsman and bowler. It also displays the date and time of the game.
12. Employee management system
This beginner C project is helpful for the small scale and large scale industries. Admin can add all details about the employee and can update and delete it. File handling is used to store the data of employees.
13. Pacman Game
The Pacman game is similar to the snake game. It is a simple game without graphics for entertainment purposes. Source code is written in the C programming language and it is very easy to understand.
14. Quiz game
It consists of simple MCQ based on sports, general knowledge, technical content etc. Players just have to select the correct answer and can reach the next level. It is a very simple project with error-free sources.
15. Phone-book application
This project is similar to the contact management system. But the main difference is that you can add some additional information like gender, email, address etc.
16. Election System
Users can enter choice as per preference and can calculate total votes and leading candidate. It is a very simple C project and very easy to understand. Useful for small scale election projects .
17. Flight ticket booking
This project is the same as the bus ticket booking system. It also consists of the available seats with the schedule of the flights.
18. Tourism Management system
To use this project, you must sign in to the system. Then you can see the packages of tourist places with its description. It will clear concepts like functions and file handling.
19. Simple Result system
This is a simple result system where you can see your updated marks by teachers. This system also stores your academic information like roll no etc. The data is stored in a text file using file handling concept.
20. Stock Management system
It is the best project for beginners. In this project, you can check the stock of a particular store and can search the items with its quantity. It has no graphics but can be used for practical purposes.
These are some of the best C programming projects for beginners. You can also check this link for more projects for computer science students.
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Home » C programming language
C programming Solved Programs/Examples with Solutions
This page contains the C programming solved programs/examples with solutions , here we are providing most important programs on each topic. We tried to provide all logical , mathematical and conceptual programs that can help to write programs very easily in C language. If you do not want to browse programs by categories, here is the list of all c programs .
List of C programming solved programs/examples with solutions and detailed explanation
Browse c programs by categories..., c standard library functions..., advance c programs.
- C program to create your own header file/ Create your your own header file in C
- gotoxy(),clrscr(),getch(),getche() for GCC, Linux.
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- C program to replace bit in an integer at a specified position from another integer. - December 30, 2018
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Top C Projects in 2023
- Introduction
- Bank Management System
- Diary management System
- Birthday List
- Unit converter
- Customer billing system
- Cyber management
- Cricket score display
- Online voting system
- Bus Reservation system
C language is the first high-level programming language that most budding programmers learn. C is undoubtedly the most versatile language used in every field. It is often recommended as the best language for novices even after 50 years from its introduction. C is a general-purpose, high-level programming language. It is extremely popular, simple, and flexible to use. It is a structured, modular, and portable programming language that is machine-independent and extensively used to write various applications. It was created by Dennis Ritchie in 1972 while working at Bell Laboratories. Initially, C was created from ‘ALGOL,’ ‘BCPL’ and ‘B’ programming languages. Thus, the ‘C’ programming language contains all the features of these languages, and with time many additional concepts got added to it as the language was standardized. This blog is all about C projects. You can find information on various C projects that will help you hone your C programming skills in 2023.
C was initially used for system development work such as writing operating systems and device drivers. Later, middleware and application programs also started getting written in C. C was adopted as a system development language because it produces code that runs nearly as fast as assembly language code. C language is increasingly used in Operating Systems , Language Compilers, Assemblers, Text Editors, Print Spoolers, Data Bases, Language Interpreters, and utility programs.
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Now let us come to the question of why to code a project in C. Well, C offers the following advantages over other languages.
Power : C is a high-level language, but it is as powerful as a low-level language such as assembly language. An optimally written C code can run as fast as assembly code. We can directly call instructions of any underlying hardware by calling its assembly code directly.
Flexibility : Seamless flexibility in memory management is one of the key reasons why C is so extensively used. C gives Programmers complete control over the memory space to allocate, deallocate and reallocate memory, resulting in increased efficiency and improved optimization if and when used properly.
Portability : C is a highly portable assembly language, and it has several integrated libraries with specialized functionality that allows it to interwork with any processor and memory architecture. Most system software such as Compilers, libraries, device drivers, boot up scripts, and interpreters for various other programming languages are typically written in C because C offers more efficient computation, faster execution, and accessibility.
Simplicity : C language offers the best of worlds for both high-level and low-level language. That is why it is often termed as a mid-level language because it has characteristics of both high-level and low-level languages. It has a simple syntax that helps users break down code into smaller and more legible parts that are easy to understand and work with. C is a modular and structured programming language. Usually, a C program is often written as small modules (functions) that are often reusable code and easy to work on.
High speed and dynamic Memory management : C supports dynamic memory allocations. The programmer is free to allocate memory at any time by using pre-defined functions. Thus, the programmer has complete control over the memory. C code’s compilation and execution time are fast in its compiled languages class. C uses a compiler (GNU C) to compile the code into machine code that the computer understands. Each file of the project (using makefile) will be compiled individually and then linked together for execution.
With this background, let us list some of the C projects that you can easily code and hone your C programming skills.
Top C Projects in 202 3
In this C programming project, you will simulate a simple banking system with credit and debit in bank accounts. Here, you will learn to create a saving account and expose basic operations such as credit, debit, probe balance, close account, etc., using simple C language code consisting of functions for each operation. File handling can store data and user information, and later you can use a simple DB for storage. This project will help you learn how to structure your code and then code each module separately.
In this project, the user will simulate operation on a personal diary such as creation or diary, writing a page, reading a page, searching a phrase on a given date, etc. Here, you can use simple text fields to save diary information. You can also build a security feature (password or paraphrase) on top of it. This project will help you practice functions, pointers, and searching /sorting algorithms.
Here, you have to create a mini calendar using C. You can learn TCL/TK and add graphic content for a more advanced project. But for a beginner, a simple Command-line utility will be good enough. The project can offer various capabilities to the user, such as printing monthly, weekly, yearly calendars, printing a list of holidays, detecting leap year, and giving a list of extended blocks (a block is a contiguous set of bank holidays in a week).
In this project, you will create, edit, and display a birthday list of your near and dear ones. You can also provide a search option to find any friend’s birthday using his name. You can also display a list of birthdays coming in a month.
In this project, you will write code to convert any menstruation unit from one system to another. E.g., convert degree Fahrenheit to Celsius or convert kilometer to a mile. You can add as many systems as you want besides common systems such as temperature, distance, time, currency (using approximate rate), and mass.
In this project, you will simulate a typical customer billing system for, let’s say, a coffee house. You will add a list of items in the menu as per their type (snacks, meal, drink, etc.), their respective price, any offered discount, payment mode. Initially, you can use only cash as a payment mode but later add credit cards and wallets. You can use files or DB tables to keep various records. Additionally, you can maintain customer records using customer name, amount due, the amount paid, and mobile number with purchased items.
In this project, you will implement a simple black and white version of the Snake game. The game would consist of a square window with blocks of ‘*’ characters filled randomly in it. The window has a snake object denoted by the ‘@’ character. The snake’s length grows as it eats ‘*.’ The game’s objective is to eat ‘*’ by going over it and ensuring the snake body does not touch any other ‘*’ block. You can use the GOTO function for movements of a snake and use ⬆, ➡, ⬇, ⬅ arrow keys to control the movement of the snake. You can save the gaming score of each player in its file using a player name as a file name.
This is a simple question-answer-based project wherein you will create a question bank for various topics such as politics, history, geography, current affairs, sports, movies, arts, etc. You will then ask questions to each contestant and give him a score based on his reply. You can further simplify the project by adding rules, bonus questions, fixed time to answer each question, lifelines, different difficulty levels, etc. You can use either DB or simple files to store data, including the player’s performance. It is a very simple project with error-free sources.
This is one of the advanced C projects. You have to maintain a user access system for a cyber cafe. The main objective of your project should be to manage user access to the computing resources. You can implement it as a client-server architecture wherein the server will maintain all computing resources, user sessions, timing, and access level (what websites can a user access, what websites they can’t). The client will request the server for time-bound access to a computing resource. So this project will have two separate code bases.
Here, you will display a summary of a cricket match that has already been played. You can include the names of the teams, venue, umpires, list of players with their role runs made by batters of each team, wickets taken by bowlers of each team, final result, and man of the match.
In this project, you will create a software platform that securely enables any organization to conduct elections involving online voting (by registered members). It should provide security, convenience, and completeness to a voting event. You can take user input details of any future voting event such as a list of voters (name, userid, password for secure access), list of standing candidates, time of voting, brief biography of each standing candidate, etc. The program can run as a client-server model where the server can manage the election data, and the client can offer a custom menu to each user so that he can log in and vote.
In this C project, you will simulate a bus reservation system. The system will ake input like bus type, the number of seats, the cost of each seat, total luggage load, individual bags allowed per ticket, etc. To create a reservation system wherein you will show a list of available seats and take reservation request and process it. You can add further capabilities such as canceling a reserved seat, refund, bulk booking, etc. It will also help find the availability of seats and find the booking information. You can use SQLite DB for data storage or resort to simple file handling.
Overall, working on c projects can be very rewarding. They can teach you a lot about how to code and can also be a lot of fun. However, they can also be frustrating at times. If you are having trouble with a c project, don’t be afraid to ask for help from others. With a little patience and perseverance, you will be able to complete your project and learn a lot in the process.

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Top 7 Exciting Project ideas in C For Beginners [2023]

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They say change is the only constant feature of human lives. While this holds true in almost every walk of life, when it comes to the technological landscape, this idiom seems to be all-encompassing. From floppy disks to USB drives, from mackintosh to Macbook Air, our gadgets, our digital bandwidth has undergone a major overhaul.
The backbone of all these advances lies in the nature of the programming language and how the scope of these languages have updated from being simple mark-up languages to a multi-framework scripting language that creates dynamic web pages. Simultaneously, our usages and dependencies on web applications have also increased.
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What makes C programming so popular?
As an all purpose programming language, C programming has a diverse range of usability. It entails upgraded attributes of Unix which has transformed the scripting of softwires for operating systems, databases and compilers among others. It is essentially the boon of C programming that Graphical User Interfaces and Integrated Development Environments have become a lived reality and enjoys the widespread application.

With the advent of C programming, memory allocation and optimization became a lot easier. Developers gained a significant rise in the bandwidth to develop more high performing web applications using C programming. Naturally, the gamut of c projects are rather divergent.
Originally conceived as source code for Unix, C programming evolved into a standalone programming language which then resulted in most of the modern operating systems that are widely used these days like windows and iOs. The pivotal role that C programming has played in software development has earned it the title of “mother of all programming languages”.
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Additionally, C programming is highly extendable and portable so a wide range of libraries can be stored which in turn enhance the functionalities of the various web applications that are scripted using C programming. The libraries of functions of C programming make it amenable to the implementation of numerous data types and other functions like loops, arrays, structures etc.
Google’s MySQL, Chromium, Oracle, and most Adobe apps also use the C programming language extensively. Also, it performs a pivotal role in our everyday lives because most smart devices people use today are driven by C-programmed technology.
You can experience seamless flexibility when working on any of the C language projects. The flexibility can be perceived in terms of memory management and allocation. This is one of the prominent reasons why C is so widely used. Programmers own full control over how they allocate and reallocate memory. Consequently, it leads to better efficiency and optimization. Moreover, the C programming language offers various memory allocation and management functions, such as malloc(),calloc(), etc.
C is known as a mid-level language. It suggests that it owns the characteristics of both high-level as well as low-level languages. Therefore, it is straightforward to understand and use. Moreover, it assists users in collapsing a code into smaller, more readable parts since it is a structured programming language.
C is known as a structured programming language because it can disintegrate a program into smaller functions. Such functions also help you to reuse code. So it is easy to understand and work on.
When you work on several C language projects, you can understand its dynamic memory allocation, which means the allocation of memory at runtime. The allocated memory can be freed up anytime in the C language through pre-defined functions.
Another prominent reason for the wide popularity of C is that the compilation and execution occur fast in C. This is because there are fewer inbuilt functions and, therefore, a lesser overhead.
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Which industries commonly use C projects?
In today’s increasingly automated technological landscape, C projects have had an all encompassing utility. Chances are high that from the minute you wake up till when you head to bed, you’ve had a tryst with C programming at every step of the way. If you’re a smartphone user, the algorithm of your phone is likely to have its base on C programming. So right from the alarm clock that you wake up to to the last WhatApp message that you check before dozing off, it can all be traced back to C programming.
Similarly, major computers operating systems be it Linux, Microsoft Windows or Mac have their kernels scripted in C programming. So chances are high that the PC that you work on also has its root in C language. Moving onto databases that actually form the rubrics for most customer applications, like Oracle, MySQL and several others, were designed in C and it wouldn’t be completely wrong to claim that almost every application that we use has one or the other imprint of C programming.
Further, our contemporary lifestyle makes us dependent on a whole host of smart gadgets. The technology that drives these smart gadgets is the internet of things which to are programmed in C language. From sensor technology to artificial intelligence, C projects are everywhere.
We will be discussing some unique project ideas in C here which developers, both established and aspiring, can consider building upon. Some of these projects already have their prototypes in practice and these can be looked upon as upgraded innovations while the others are novel ideas with a lot of merit to be developed into a workable project.
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Top C Project Ideas For Beginners
1. ticketing and reservation system.
Our older generations will vouch for how tedious long distance travel would be prior to the digital era. Not only would the journey be long but also getting access to the modes of transport used to be rather painstaking. Long queues at the booking centers, which too would be situated fairly away from usual residential areas, a limited number of seats and the highly inefficient and painstakingly slow ticketing process would dampen the spirits of traveling.
With e-ticketing systems, access to air, rail, and bus journeys have not only increased considerably but also people can easily book tickets on their own without having to depend on middle persons and agents. As increasing numbers of booking platforms emerge with more tech savvy features, we have C programming to thank. The source code in C can be adopted to a seamless booking process for not only air, rail or bus tickets but also car rentals.
In fact, using the same codes and libraries, developers may also consider developing e-booking platforms for hotel bookings, restaurant tables and so much more. Strings and arrays in C programming are extremely helpful to ease out the booking window for both web and mobile phone users.
Further, if the developers strip external file storage from the source code, then the user data will also be erased once the ticket has been booked. This eliminates the fear of a data privacy breach for the users.
This system helps the users to easily check the book tickets, bus schedule, the bus status board, and cancel reservations. When buying tickets, the user should first enter the bus number. Subsequently, the system will show the entire number of bus seats and the passengers’ names. The user then needs to enter the seat number, the number of tickets, and the person’s name.
It is one of the fundamental C language projects for beginners that uses if-else logic, arrays, loop statements, and different functions like cancel(), login(), etc. This C project helps you to simulate a bus reservation system. This system takes input like the number of seats, bus type, the price of each seat, luggage load, individual bags permitted per ticket, etc.
These inputs help you to set up a reservation system wherein you will display a list of available seats, accept reservation requests, and process them. Subsequently, you can add more functionality like a refund, cancelling a reserved seat, bulk booking, etc. Moreover, it assists you to determine seat availability and search for the booking information. You can use SQLite DB for data storage or use simple file handling.
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2. movies and in-house entertainment.
From those rare and far between black and white television sets, we have progressed to sleek, paper-thin plasma television sets. Our theatre going experience has also rapidly changed from low resolution single screens to 3D and IMAX screens. What used to be the content of sci-fi films only a few years ago is a living reality now.
Here again, the scope of innovation emanates from advanced programming languages like C. The entertainment industry, especially gadgets, lays down a lot of potential for the development of exciting project ideas in C. Another avenue of innovation in C projects is the gaming industry. A huge number of video games and virtual reality games have their kernels programmed in C.
To further explore the prospect of C projects in this domain, developers can work on projects that are energy efficient and more responsive to user impulses. ASMR is an upcoming attribute of modern lifestyles. Integrating ASMR elements in theater and television reels as well as web entertainment systems using C language can go a long way in transforming the entertainment landscape.
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The project’s objective is to update a consumer about the movie ticket booking system that helps them to order tickets. It is one of the versatile C language projects for beginners created with the intention to make the process as easy and fast as possible.
This system helps you to book tickets, cancel tickets, and see all booking records. Another key purpose of this project is to supply different types of client facilities and outstanding customer service. It must fulfill all conditions for booking a ticket.
3. Virtual workspace
From browsers to cloud interfaces, the potential project ideas in C can be dug out anywhere. For instance, both the Google file system as well as Google Chromium Browser or Chrome as we know it had their source codes in C programming. It further incorporated more advanced features to develop a virtual shared working space like Google Suite.
Developers may think on these similar lines to come up with C based source codes for a more interactive and responsive virtual workspace. With Google Drive, we have managed to optimize our system memory spaces to store and access larger files, hence a C project which works on similar lines, including more dynamic sharing options, integrates device optimization and also provides notification of unauthorized use, thus ensuring the security of online data will be immensely desirable.
Additionally, with remote work becoming increasingly popular, online presentation platforms, and web applications, scripted in C language is going to be in demand in the upcoming days.
4. Healthcare industry
With the rampant development in the diagnostics and healthcare facilities, the need for more sophistication and precision in life supporting devices and machines across different fields of healthcare has risen substantially. A large chunk of these healthcare devices runs on microcontroller technology and here again, we are dependent on C programming.
With this ever evolving field of medical research and treatment, the demand for advanced devices continues to be on the rise. Accordingly, developers can rely on c projects to upgrade the integrated microcontroller technology to take our healthcare systems a notch higher. These may include better and more accurate diagnostic equipment or more invasive, microsurgery facilities, the scope of innovation in this domain is quite expansive.
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5. online bank management system.
This is a rather ingenious project idea in C which can save up a lot of hassles of regular visits to the bank for your account related activities. C programming can be the basis of drawing up an authenticated virtual account, which will enable the users to manage their respective bank accounts from the comforts of their homes.
Be it transactions, regulating EMIs and other payments, managing existing accounts, or linking up new accounts, the online bank accounts would give the users the power to monitor and manage their banking system anywhere and everywhere, without being dependent on inefficient bureaucracy and overcrowded banks.
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This C programming project helps you to simulate a simple banking system with debit and credit in bank accounts. It is one of the simplest C programming projects that imparts how to create a saving account and render fundamental operations like debit, credit, close account, probe balance, etc. It uses simple C language code comprising functions for every operation.
The file handling can store data and user credentials. Subsequently, you can use a simple DB for storage. This project imparts you code structuring and then separately codes each module.
6. Office management system
As office goers, nobody likes to be chaperoned and schooled, However, for efficient management of office and workload, it is imperative for the leadership to keep track of the workers and their activities. It might not be feasible and certainly not desirable to physically hover around one’s desks to keep track of one’s activities or have every single employee sign in and out as and when they enter and leave work.
Hence an automated, centralized employee record management is one of the most novel project ideas in C which developers can work on. This will not only record the progress of the employee, but it can also provide two-way access between the employer and an employee to track payments, leaves, due raises, submissions, etc. This will not only be time saving but also facilitate better transparency and accountability within the office environment.
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7. academic outputs.
Our academic environment has evolved largely From the days of chalk and board, we’ve arrived at smart computers that are being handled by children from a rather tender age. Keeping pace with these changes, our learning methodologies also need to be re-envisioned. No longer will students appreciate or gain from rote learning and memorization of pages after pages.
In this digital era, visual and graphical demonstration of knowledge has the best impact. So C programming strings and libraries can be utilized to digitize and animate the lessons so that teaching becomes fun and impactful.
For instance, remember those grammar classes where we have to memorize synonyms and construct sentences with them? In their contemporary avatar, the string hash function can be used to enable one to move the cursor over a word and a whole host of graphics, synonyms, meanings come up. So not only does the student learn the usage of the word in the context of the reading but also its inherent meaning and grammatical properties.
The boon of C programming is manifold and across different industries. It is really up to the developers to think out of the box and cull out the best possible utility of the plethora of C functions and libraries to come up with extraordinary projects in C.
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8. Customer billing system:
This C project allows you to simulate a common customer billing system for, for example, a coffee cafe. You would add a list of items on the menu according to their type (including meal, drink, snacks, etc.), price, discount, and payment mode.
It is among those C programming projects that ensure data security. You can use only cash as a payment mode; however, you can later add wallets and credit cards. Furthermore, you can use DB tables or files to save different records. You can also maintain customer records with the help of the customer’s name, the amount paid, the amount due, and the phone number with purchased items.
9. Online voting system :
It is one of the C mini projects for beginners wherein you would create a software platform that securely allows any organization to perform elections involving online voting. This voting is performed by registered members. It must offer convenience, security, and entirety to a voting event. The user input details can be any future voting event like a list of voters (userid, name, password for safe access), time of voting, list of standing candidates, a short biography of every standing candidate, etc.
This program can execute as a client-server model wherein the server can organize the election data. The client can provide a custom menu to every user so that they can log in and vote.
The online voting system is one of the popular C mini projects for beginners because a superior quality online voting system offers excellent ballot security. The online election voting systems and online voting tools help you in making crucial decisions after collecting your group’s input systematically and reliably. Such decisions are often taken on an annual basis either at a specific duration of the year or during an event.
10. Library Management System:
Library management is one of the best C programming projects for beginners that manages and saves electronic book data depending on the student’s demands. Both library administrators and students can use this system to track all the books present in the library.
It is one of the widely used C programming projects for beginners because it helps both the students and library administrators to get the desired book. The C files used to implement the library management system are: main.c, issuebook.c, searchbook.c, viewbook.c, and more.
We hope you will have an excellent learning opportunity in executing these C projects. If you are interested to learn more and need mentorship from industry experts, check out upGrad & IIIT Banglore’s Executive PG Program Full-Stack Software Development .
What doesn’t the C language support function overloading or polymorphism?
When the C code is compiled, the name of the symbols must remain intact with the machine code. When we add function overloading to our source code, we should also introduce some name mangling techniques so that the function name does not clash as a preventive measure. C language is not a strictly typed language as many things like data types are convertible. This overload can add complexity and confusion in a language like C. On the other hand, in C++, you get machine-generated names for the symbols in the compiled binary, which is why C++ has polymorphism and C doesn’t.
How are the Macros different from the functions or methods?
Macros are preprocessed, whereas functions are compiled with the source code. No type checks are done in the case of macros, whereas type checking is done in the case of functions. Using macros increases the length of code, whereas functions keep the size of source code unaffected. Speed of execution is faster in macros as compared to the functions. Before the source code is compiled, the macro name is replaced by the macro value, whereas in functions, the transfer of control occurs during the function call. Macros are only helpful when you have minimal code to reuse; otherwise, functions are considered a better choice. Macros don’t check any compile-time errors, whereas functions do.
How is a call by reference different from a call by value?
In C language, functions can be invoked in two ways: Call by value and Call by reference. The values commonly differentiate them, which are passed to them as parameters. When we call a function and pass values of variables as the parameters to that function, such calls are called call-by values. And when we call a function by the address of actual variables as parameters to that function, it is called call by reference. In a call by value, the changes made to the values do not affect the variables, whereas, in a call by reference, the actual variables get affected.

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Top C Projects to Sharpen Your Skills and Build Your C Portfolio
C is a general-purpose programming language that’s used for writing different applications, operating systems, and other complex programs. C is a common language used in programming to create basic applications, particularly for Windows. This versatile language is great for programming projects due to its flexibility and straightforward use.
If you’re interested in checking out some C projects to help boost your career, there are many online tutorials to choose from. Whether you’re interested in making a mobile game, mini-games, or just obtaining some more code insight through practice projects, this guide has all the information you need to get started.

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5 Skills That C Projects Can Help You Practice
The technical skills that you’ll gain while learning to code in C are vital to being an effective C programmer. Software developers around the globe have compiled projects to help you learn C skills in various applications. Obtaining a better understanding of these practical skills through large or small projects will help set you up as a professional, and give you a competitive edge in the job market.
- C and C++ languages. Creating C projects requires you to be an expert in C and C++. These programming languages help in building and developing software and operating systems.
- Source Control. Source control involves storing and managing code. You must be proficient with version control and obtain the skills necessary to collaborate with other team members. Mastering this means you are adept with tools like Git, SVN, Mercurial, etc., which organizations prefer chiefly.
- Version Control. You’ll be able to enhance your version control skills because you will need to know how to manage and track any changes made to software code. This is an important skill when working on a development team.
- Database Management. Database management is one of the programming skills companies are looking for in qualified candidates. C’s practical skills are necessary because it lets users quickly solve problems by understanding data organization and structures.
- Data Structures and Algorithms . Whether you’re creating a basic C project or an advanced project, data structures and algorithms are fundamental aspects of programming.
Best C Project Ideas for Beginners
Beginners might feel worried about starting C projects, especially if they’re still learning the basic skills and techniques required for the language. Below, we’ve compiled some straightforward projects that you can add to your portfolio, even while you’re still learning the fundamentals.
Bank Management System
- C Skills Practiced: C and C++ languages, Databases
For this beginner C project, you must create and manage an account with simple C language codes. Generating a bank management system will help you grasp and apply basic programming language concepts more efficiently. You’ll also learn how to use the method of file handling to store data and user information. ,
Diary Management System
- C Skills Practiced: C and C++ languages, Data Structures and Algorithms
This diary management system project might sound complicated, but it’s easy and informative for new programmers. This C project helps you save personal information using C programming skills and the concept of file handling. For example, users can implement actual code to protect diaries with a password or include reminders for upcoming meetings or projects.
Hospital Management System, Version 1
This project is similar to a customer management system (CMS) where an organization, in this case, a hospital, can save essential details about the patients like illness-related information, appointment time, family medical history, and doctors they’ve seen.
Employee Management System
This simple project is essential for both small-scale and large-scale industries since it aims to store the information of employees. You can include functions to update, delete, and save details if needed.
Election System
This election system is a beginner C project where the user can see and calculate total votes and see which candidate is leading. This simple project lets you use actual data to create a functional application for small-scale elections, providing you with applicable skills for the workforce.
Best Intermediate C Project Ideas
These intermediate C project ideas are for those who already have some programming experience and are ready to level up their portfolio. For these projects, you should be very familiar with C programming, as you will begin learning more complex algorithms and data structures. If you’re interested in growing your technical skillset, check out these intermediate C projects below.
Customer Billing System
- C Skills Practiced: Data Structures and Algorithms, Source Control
This project reflects the practical utilization of C programming for supermarkets, cafes, shops, department stores, or anywhere that involves paying customers. Professionals can also use this system to add or edit details like name, mobile number, address, paid amount, due amount, payment date, and customers’ visit time.
Cyber Management System
- C Skills Practiced: Data Structures and Algorithms, Databases
This project includes two different source codes, one for client functions and another for server functions. This management system also uses features like multithreading, socket, and a file handling method for storing records. Having a solid grasp of this project will help you create management software for organizations needing an employee management system, library management system, or bank management system.
Hospital Management System – Version 2
This project is an advanced version of the beginners’ hospital management project in C. You’ll use the language to consolidate patients’ files and important medical details for this C programming assignment. Through this contact management system, you’ll be able to add, update, search and delete files if needed, making it an excellent addition to any tech resume or portfolio.
Modern Periodic Table
- C Skills Practiced: Source Control, Databases
Forget old-fashioned paper periodic tables. Instead, why not code an interactive table of elements? The purpose of this C project is to accurately store the name, symbol, atomic number, atomic weight, and other properties of the chemical elements. Additionally, the source code for this project is easy and understandable, consisting of 600 lines of code total.
Pacman Game
The iconic Pacman game was first created for entertainment but can now boost your skills in C. In this Pacman game project, you must ensure that Pacman correctly moves along the established path and gains points as the player progresses through the game. You can do this using the C programming language and Integrated Development Environment (IDE).

Best Advanced C Project Ideas
Planning projects in C can be challenging when you’re an expert user looking to obtain new skills. An advanced C project should challenge you and make you step outside of your professional comfort zone. It’s also a good opportunity for testing your skills. We’ve created a list of some more complicated projects in C that provide users with expert skills.
Typing Tutor
In this programming project, you’ll measure users’ typing speed and help them enhance it through repeated practice. This C project is all accomplished with 600 user-friendly lines of code and includes skills like troubleshooting whenever the user makes an error while typing.
Telecom Billing System
This compact project includes management and supervision of billing operations. The software allows inputs like record name, phone number, payment amount, and more. With this mini project in C Telecom Billing System, you will edit, add, list, search and delete records if needed.
School Billing System
This C project creates a school billing system that can manage the accounting and billing under two account types: students and teachers. This compact program also uses databases and data structures to help you better understand developing small C projects. The project’s source code is estimated at around 1,000 lines.
Quiz Game Mini
This is a console application project where a series of questions will be asked to the user, and then they are awarded a prize for every correct answer. The quiz game covers science, technology, sports, movies, general health, and geography, so it’s excellent for testing general knowledge. The source code for this advanced project is about 1,000 lines long.
This phonebook management system will allow you to conduct simple phonebook operations such as listing, modifying, and searching and deleting phonebook records. Database and data structure concepts are necessary for the accurate retrieval of phone numbers and contact information.
C Starter Project Templates
Starter templates are demos that users can modify with programming techniques. These project templates are excellent to get you familiar with the common language of C and build software development experience. Get your projects started with these helpful C templates.
- C Project Template . C projects have command line parsers, Makefiles, usage messages, and help. The goal of the C project template is for you to arrive at a solution point quickly, rather than going through code line-by-line.
- Template C Project for VSCode . This template is used for starting the code easily and effortlessly by using technical skills in C programming.
- C-Template . This is another template to start a c project that contains CuTest unit testing and CMake builds setup.
- C Project Template – peterdn . This project template has CMake build script and unity test framework as features. CMake build scripts are used for tests, applications, and libraries.
Next Steps: Start Organizing Your C Portfolio

Your C portfolio should stand out from the rest by showcasing your skills and creativity. Below are a few tips on how to make sure your portfolio outshines the competition.
Passion Projects
Put projects on your resume that show your drive, creativity, and passion. If you’ve made a website, a simple project, an app, or just helped out someone with their business, put that in your portfolio too. Just take note that it should be complete and error-free projects, and you’re proud to show them off to people.
Relevant Job Experience
When displaying your projects, be sure to list the practical skills and technological know-how that were utilized when building them. This makes it easier for the recruiter or potential client to see what your tech stack and knowledge base are and understand the range of skills you will bring to the table.
Client and Company Testimonials
If you’ve had clients before or friends with whom you’ve successfully finished projects or work, it’s great if you can ask them about their experience with you. Ask if their testimonials can be included in your portfolio. Having this featured alongside their project will be an attractive addition to your portfolio.
C Projects FAQ
No, making a portfolio reflecting your programming skills isn’t difficult. Simply work on the various applicable projects mentioned above, launch the more complex projects , and add them to your portfolio.

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The best project for beginners in C programming is one that can be executed based on their current skill level. Start with something that you’re comfortable building and work up from there. Take on more complicated projects so you can have a well-versed resume and a strong skill set.
A project’s timeline depends on your skill level and the project’s overall difficulty. Typically, a programming project or template will provide a relative timeframe that it takes to be completed, but it may take a little longer if you’re a novice to a basic programming language like C.
The most important skills for C projects include knowledge of C and C++, source control, database management, and data structures and algorithms. Being skilled in these areas will make completing projects in C much faster.
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Here are 30 public repositories matching this topic...
Cognitive-ninja / mini-voting-system.
C project for beginners.
- Updated Jan 22, 2023
jithin-renji / Nuke
A program to 'nuke' storage devices.
- Updated Oct 6, 2022
Privanom / algorithms
A open source repository of different kinds of algorithms in c. Newbies are encouraged to contribute! Note: I made this code when i didn't have as much experience in programming
- Updated Oct 1, 2022
akhtar02 / Scientific-Calculator-in-C
This Reopositories is a Scientific Calculator 💗 using C-Graphics 😍
- Updated Feb 20, 2022
ssoad / Employee-Management-System
Employee Management System in C By Sohanuzzaman Soad
- Updated Dec 13, 2022
ebraj / Phonebook-C-Project
Phonebook is a simple project built in C where you can save the Infos of a person and can modify and delete it too.
- Updated Jul 29, 2021
grim-firefly / C-CPP-Project
Here You will find some easy C and C++ project.
- Updated Dec 3, 2019
UG-SEP / Tic-Tac-Toe-AI-Intergrated
this is a repo of where you will get to see tic tac toe AI intregrated project
- Updated Aug 28, 2021
singhofen / c-programming
Small c programming language projects
- Updated Jan 1, 2023
ganeshkavhar / Calender-app-in-C-by-ganesh-kavhar
ganesh kavhar projects
- Updated Mar 4, 2019
me-badsha / C-Graphics-Project
- Updated Sep 6, 2022
UG-SEP / Paint-with-UG-The-SEP
This is a Project created in c named Paint With UG. this is like paint application . You can draw shapes , freehand , fill color, change color, add image , open image , save image ,change background , clear pad , write text etc..
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Rohan-Shakya / c-programs
This repository contains the C Programs with the source code as well as output so that you can learn the better way of programming.
- Updated Oct 22, 2020
mozancetin / c-projects
Some C Projects
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naemazam / Hotel-Management-System
Password Protected Hotel Management System in C language.
- Updated Feb 18, 2022
Mohammad-Asif-Web / Cpp-and-projects
C and C++ language practice, problem solving, data structures and algorithms with more exercise. completed four projects in C
- Updated Jul 27, 2022
reboot13-git / C
Basic C projects
- Updated Jan 7, 2022
sheam-tech / C-Projects-Repo
Although C isn't the best language for application software development, I tried to build some mini-games and small applications(CLI) to improve my problem-solving abilities.
- Updated Sep 21, 2022
shibam120302 / IP_Address_Finder
With the help of splay tree data structure, we would create a tree whose nodes are embedded with the Ip address of the device that are connect to a specific network router.
- Updated Jan 17, 2023
naemazam / Library-Management-System
Library Management System is specially designed for purpose of adding book’s records in a library. The system elaborates the basic concept for storing and generating the book’s detail.
- Updated Feb 25, 2022
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C practice problems | some real life problem solving using C language
- Post category: Programming
- Post author: Sohel Rana
- Post last modified: December 27, 2022

C practice course will push you to solve problems. Here I will give you the idea about some most relevant problem solving.
I will help you to solve some problems which gives you the encourage to solve problems at any problem solving platforms.
The most common problem among programmers who want to become a competitive programmer is that how to solve real life problems.
Here, I will discuss about some problems and gives you the source code by which you can understand the basics of real life problem solving.
Competitive programming is not a static field. Everyday programmers have to face new problem here.
I will just give you some idea about how to solve problems in best way.
Then you have to solve many problems as much as you can in any problem solving platforms.
Table of Contents
Finding square roots problem and solution in C
Read the description of finding square roots problem
Problem description

This finding square roots problem is taken from CodeChef for practice and learning purpose only.
Now, we will discuss how to solve this problem using C language. Obviously you can use other programming language but the logic can be same.
You can also implement your own logic. Let’s see the solution of this problem bellow.
Solution of finding square roots problem
Here at the solution code we have taken an integer variable T for storing the number of test case from user.
Then each line will take another integer as input and determine its square root by sqrt() function which is defined under math.h header file.
Then the floor() function which is also defined inside math.h header file will make it the largest integer which is less then or equal to then number inside it.
Let’s consider,
floor(sqrt(2)) ;
= floor(1.41421356237);
Now, compile and run this code then check the output for given input set. You will see the output like this.
Output of finding square roots problem
Here, first line contains 3 which is the total test case. Then we want to determine the square root of 10 which is in the second line.
After pressing enter we will get the output 3 which is in the fourth line. Then another two input and their output is shown above.
This is not the only solution to this problem. You can use any other loop although we have used for loop here.
So, try this using other loop which will increase your problem solving power.
Sum or difference problem and solution using C
Read the description of sum or difference program

Here in this sum or difference program we have to take two integers as input from user.
The we have to check if the first number is greater than we have to print their difference. Otherwise we have to print their sum.
One thing should take into account that if the two number is equal then it automatically print the sum as the first number is not greater than the second one.
We have taken this problem from CodeChef for practice and learning purpose only of them who want to become a problem solver in future.
Here we will discuss the solution this problem using C language. You can use other language too to write the solution to this problem.
You should try to invent other ways to make the solution of this problem. So, let’s see the solution first.
Solution of sum or difference problem
At first we will take two integer from user and store them in two variable a and b.
Then we will use if else condition to check if the first number is greater than second number or not.
If the first number is greater than second, then we will subtract second number from first number and print the result.
Otherwise we will print the sum of the two numbers.
If a user give two number ,
result = a – b = (10 – 8) = 2;
Because a > b here.
Again if he gives two number ,
then result = a + b = (20 + 25) = 45;
Because a <= b here.
Now, let’s go to the code bellow to implement this situation.
Output of sum or difference program
You will see the following output when you compile and run the above program.
Here, the user gives 82 as the first number and 28 as the second number. As 82 > 28 , so the program will print their difference which is in third line 54.
But run this program and give input 28 as first number and 82 as second number. The output will be as like as bellow.
However if you give two same number as input, then the program also add them and print the sum of them.
Chef and operators problem solving in C
Read the problem description of chef and operators problem here;

This chef and operators program will take an integer which will be the testcase and then we have to give two integer for each test case.
This program will check the given two integer that which is the biggest among them. Then we will print the output according to that.
We have taken it from CodeChef for practice and learning purpose only.
We will discuss the problem and see a solution of this problem which will help the beginner programmer to go ahead in their journey.
Don’t just depend upon our solution, rather you should try to solve it in your own. So, try this.
Don’t worry, if you are confusing about the problem then we have given a simple solution to chef and operator problem which is given bellow.
Solution of chef and operators problem
At first we have to take the testcase from the user. The we will use a for loop to take the input for each test case. You can use any loop to do this.
For each test case we will take two integers from user and check the condition using if else statement.
If first number is greater then second, we will print ‘ > ‘ sign. If the second number is greater than first number, we will print ‘ < ‘ sign. Otherwise we will print ‘ = ‘ sign.
Consider a user give two integer 15 and 20 .
Then we check that 15 < 20 and print ‘ < ‘.
Again if he give two number 25 and 15 .
Then we know that 25 > 15 and print ‘ > ‘.
If the given two number is same, then we will print ‘ = ‘.
Now, let’s go to the C solution of chef and operators problem.
Output of chef and operator problem
After compiling and running the above program you will see the following output.
First line contains 3 which it the number of test case for this problem. Then the user gives two integer 10 and 20 where 10 < 20 and for this we have printed ‘ < ‘ here.
Second input is 20 and 10 where the program have printed ‘ > ‘ sign on the screen. And it has printed ‘ = ‘ sign for the third test case.
Now, you should try this problem using different loop like while loop and do while loop. If you use other programming language then the logic will be same.
Solving reverse the number problem in C
Read the problem description of reverse the number problem here;

The main program is to reverse the number. If a user gives the input 12345 then we will make it reverse like 54321 and print it.
We have to avoid zero at the beginning of our output.
We have to take the testcase as input from user and for each test case the program will take an input integer and print the reverse of that number.
This problem is taken from CodeChef for practice and learning purpose only.
We will try to describe the solution and the cause behind it when we solve this problem in this guide.
You can solve this problem in many way using different logic. You should think about your logic.
We will give a simple solution to this problem bellow. Let’s try to solve reverse the number problem by C.
Solution of reverse the number problem
We have taken an integer Test for storing the given number of test case for this reverse the number program.
For each test case we will take the number which we have to reverse. The we will use a loop until the number is equal to zero.
We have used while loop here. Inside the while loop we will determine reminder by dividing the given number by 10.
This reminder will be the last digit of the number as like as bellow.
When we divide 25 by 10 , the reminder will be 5 which is the last digit of this number 25. That means we have got the first digit of our output.
As we have take the variable revNum = 0.
So, (revNum * 10) + rem = 5
The we will update the number by divide it with 10 which will always give an integer.
After completing the function of while loop we will get the reverse number. Then we will print that number. Now, let’s see the code.
Output of reverse the number problem
After compiling and running this reverse the number program you will see the output like this.
Here, the first line is the test case given by user. Then the second line is the first input which we have to reverse using out program.
The third line is the output for the first input.
Then the fifth line is the output for the input of fourth line and so on.
You many have noticed that for the last test case we have printed 32 instead of 0032. You will get error if this solution prints 0032.
Second largest number problem and solution by C
Read the description of second largest number problem carefully.

In this above problem we have to determine the second largest number inside the given three numbers of user.
We will take three integers as input and check by our program that which number is the second largest among them. Then we will print that number.
We have taken this problem from CodeChef for practice and learning purpose only.
You should bear in mind that the solution we have given here is not the only solution to this problem. Rather it will be better if you find the solution by your own.
We have to compare each number with rest two and then we will take the decision that which number is the second largest. Let’s see a solution of this problem.
Solution of second largest number problem
Here in the given solution we have taken a variable T to store the test case and then we have used a for loop for rotating the program T times.
For each test case we will take three number and then compare them.
If the first number is greater than second and less than third or greater than third and less than first number, then we will print that the first number is the second largest.
We will check this for second number also. If first and second number is not the second largest then the third number will automatically be the second largest number.
Assume a user gives three number 5, 10 and 15. Now our program will check the second number first.
Is second number is less than first number and greater than third number?
The answer is ‘Yes’. And then the program will print the second number as the second largest number.
Output of second largest number problem
When you compile and run the above program you will see the following output. You can also check the program for different input.
First line contains 3 which is the number of test case. Then the given three number is 120, 11 and 400.
As 120 is the second largest among them, the program prints 120. Similarly, the program have given the other output also.
However, if you have any other logic to solve this problem then you should try to implement that. This is not the only solution of this second largest number program.
Valid triangles program with solution in C
Read the description of valid triangle problem before solving it.

We know that the sum of three angle of any triangle is equal to 180. Here, we have to implement this logic to write the solution of valid triangles program.
The program will take three angles from the user and check if the sum of all angles is 180 or not. If it is 180 then we have to print ‘YES’ otherwise ‘NO’.
This valid triangle program is not a hard problem at all. This problem is taken from CodeChef for practice and learning purpose only.
Here in this C practice guide we will discuss the solution of this problem as well as the cause behind it.
Now, let’s go to the solution of this valid triangle program. We have used C language here although you can use any other language too.
The logic may be same or different for you.
Solution of valid triangle problem
For solving this problem, at first we have to take an input from user which will be the test case for this problem. The each test case will take three integers.
After taking these input we will add the three angles and check if the sum is equal to 180 or not. When the sum is 180 then the triangle is possible otherwise not.
Suppose, a user gives three integers which is 60, 80 and 40 .
Then the sum of these angle will be (60 + 80 + 40) = 180
So, this triangle is possible and it is a valid triangle .
But when a user gives three angles like 50, 30 and 80
Then the sum is = (50 + 30 + 80) = 160
As 160 is not equal to 180 then this triangle is not possible and is not a valid triangle .
Output of valid triangle problem
You will see the output like following when you compile and run the above program.
In the above output, first line which is 3, is the number of test case for this program.
Then second line is the first input set for the program. Here the sum is equal to 180 and for this the program have printed ‘YES’.
The other test case is also have worked like this.
However, you can implement other logic to solve this valid triangle program if you have any idea about solving this problem.
The solution we have given here is not the only solution of this problem. Every problem have several solution and you have to discover your own.
Lucky four problem solving with C
Read the description of lucky four problem before solving it.

This lucky four problem is all about finding the digit 4 in any integers. We have to print the occurrence of the digit four in any integer.
We will take the integer from the user and find the number of digit 4 inside that integer.
After that we will print the number of 4 inside that integers. We also have to print zero if the digit 4 is not present in that integer.
We have taken this problem from CodeChef to discuss about the solution of this problem for learning purpose only.
Obviously you can solve this lucky four problem using different method as well as different programming languages.
We will use C programming language to solve this problem. Now, let’s see the solution to this lucky four problem.
Solution of lucky four problem
We will take an integer at the beginning of this problem which will be the number of test case.
The the user will give an integer for each test case. What we have to do is, find the number of 4 inside that integers.
Here, in this bellow program we have stored the given integer in the variable a. After that we have used a while loop till a > 0.
Inside the while loop we have divided the integer with 10 which will give the reminder of its last digit.
Then check that digit that is it 4 or not. We will update the value of number by dividing it with 10.
Consider, a user have given 244 to check the occurrence of digits lucky four. Then this program will divide it with 10 and store the reminder in rem variable.
rem = 244 % 10
As the reminder is 4 then the value of count variable will be 1.
The the new value of integer will be 244 / 10
= 24 (Integer part only).
Then the new integer will also be divided by 10 again which will give the reminder 4 again.
The value of count will be 2 and value of new integer will be 24 / 10
Then again 2 will be divided by 10 which will give the reminder 2.
As 2 is not lucky four, so the value of counter will not be increased here.
Then after checking all the digits of the integer we will print the value of count which will be 2 here.
Output of lucky four problem
Now, compile and run the above lucky four program to get the output like we have given bellow.
In this above output of lucky four program, the first line contains integer 5 which is the testcase for this program.
Then the second line is the first integer which we have to check for lucky four. As here the digit 4 remain 4 times then the program have printed 4.
Similarly the program have checked all the other input and printed the occurrence of 4 in the output.
In this above program we have used for loop for taking the value of all the integers.
We have used while loop also to check the digits and update the number.
However you can use any other loop for writing this program. You should also try using different logic to solve this problem.
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Feb 13, 2022
Problem-Solving Through Programming In C
The development and industrialization of the modern world are accelerating. The technological advancements combined with the increased market competitiveness necessitate the modern generation to be better problem solvers.
Why is it important to learn problem-solving through programming?
The simple answer- we all make decisions every day. Problem-solving abilities via programming are one of the most in-demand skills in present times. So the time, for you to improve them is now.
In this article, we will be tackling problem-solving through C programming. For embedded devices, C is the most extensively used language. C is a structured programming language with a large number of built-in functions and operators that can be used to create complicated programs. It’s crucial to be able to solve problems in C. Don’t get dismayed if you lack these abilities. We’ll get you up and running in no time….
What is a program and what does programming means?
A program is a set of instructions arranged in a sequence to guide a computer to find a solution for the given problem. The process of writing a program (converting algorithm or flowcharts) to a specific set of instructions is called programming. A computer language is used to write a set of instructions (Computer Program).
What is the most important aspect of problem-solving?
Programmers must first understand how a human solves a problem, then recognize to translate this “algorithm” (a set of instructions for guiding a computer to generate a solution) into something a computer can perform, and lastly “code” the program (a computer is dumb at its core; it’s you who makes it smart).
A ‘C’ program is composed of preprocessor commands, a global declaration section, and one or more functions (a function is a set of instructions used to perform a specific task).
Quick Tip: The most important C header file is: #include<stdio.h>
In general, a C program comprises of,
- Declaration of Variables
- User-defined input/output (eg printf)
- Decision making (if, else if, if-else)
- Loops for multiple Iteration (for, while…, do…while)
- Functions (can be called as many times as the user wishes) and Strings
- Arrays (elements with a similar data type, stored at contiguous memory locations)
- Pointers(stores memory address)
One of the most significant steps in the coding process is to develop a logic for the given programming question. We recommend that you think about the question before tackling it head-on. Try developing its algorithm and strive to come up with multiple solutions (code), for a given problem. Working back and forth with the code and understanding its logic will take you far in this endeavour.
Quick tip- Try drawing flowcharts and look for the output, this will save you a lot of time.
Fortunately, C includes keywords, operators, switch, looping elements, and other useful features to get you going. Some simple steps to follow are,
Define/Establish the problem:
Before attempting to solve a specific problem, It is vital to first comprehend it. To acquire a handle on the problem, read it twice. In most cases, a clear and succinct problem statement is supplied. Input and output should be specified in the problem definition. A thorough understanding of the program is essential. The provided technical challenges can be solved analytically. Most difficulties can be resolved with a basic understanding of math. In the majority of cases, complete knowledge of the topic is offered together with the underlying mathematical notion. Writing a pseudo-code at this point is helpful
Formulate simple algorithms for arithmetic and logical problems
Developing an algorithm is the most important part of a successful code. A well-defined algorithm will help you structuralize the C code making it easier to find errors. Algorithms are frequently regarded as the foundation of a programming code. They are preferred in job interviews to access a candidate’s potential in coding skills. An algorithm is the core structure of your C program.
Let’s solve a simple C Programming problem together,
Find the area and the circumference of a circle.
Try developing an algorithm for this program,
- Step 1: Start
- Step 2: Read r
- Step 3: Calculate A=3.14*r*r C=2*3.14*r
- Step 4: Print A, C
- Step 5: Stop
Convert Algorithms into Programs (in C language)
C, C++, MFC Problem-Solving Through Programming In C Sonali Desai Sonali Desai Updated date Feb 08, 2022 22 0 0
facebook twitter linkedIn Reddit Expand Download Free .NET & JAVA Files API Try Free File Format APIs for Word/Excel/PDF The development and industrialization of the modern world are accelerating. The technological advancements combined with the increased market competitiveness necessitate the modern generation to be better problem solvers.
Why is it important to learn problem-solving through programming? The simple answer- we all make decisions every day. Problem-solving abilities via programming are one of the most in-demand skills in present times. So the time, for you to improve them is now.
What is a program and what does programming means? A program is a set of instructions arranged in a sequence to guide a computer to find a solution for the given problem. The process of writing a program (converting algorithm or flowcharts) to a specific set of instructions is called programming. A computer language is used to write a set of instructions (Computer Program).
What is the most important aspect of problem-solving? Programmers must first understand how a human solves a problem, then recognize to translate this “algorithm” (a set of instructions for guiding a computer to generate a solution) into something a computer can perform, and lastly “code” the program (a computer is dumb at its core; it’s you who makes it smart).
Declaration of Variables User-defined input/output (eg printf) Decision making (if, else if, if-else) Loops for multiple Iteration (for, while…, do…while) Functions (can be called as many times as the user wishes) and Strings Arrays (elements with a similar data type, stored at contiguous memory locations) Pointers(stores memory address) One of the most significant steps in the coding process is to develop a logic for the given programming question. We recommend that you think about the question before tackling it head-on. Try developing its algorithm and strive to come up with multiple solutions (code), for a given problem. Working back and forth with the code and understanding its logic will take you far in this endeavor.
Define/Establish the problem Before attempting to solve a specific problem, It is vital to first comprehend it. To acquire a handle on the problem, read it twice. In most cases, a clear and succinct problem statement is supplied. Input and output should be specified in the problem definition. A thorough understanding of the program is essential. The provided technical challenges can be solved analytically. Most difficulties can be resolved with a basic understanding of math. In the majority of cases, complete knowledge of the topic is offered together with the underlying mathematical notion. Writing a pseudo-code at this point is helpful
Formulate simple algorithms for arithmetic and logical problems Developing an algorithm is the most important part of a successful code. A well-defined algorithm will help you structuralize the C code making it easier to find errors. Algorithms are frequently regarded as the foundation of a programming code. They are preferred in job interviews to access a candidate’s potential in coding skills. An algorithm is the core structure of your C program.
Find the area and the circumference of a circle. Try developing an algorithm for this program,
Step 1: Start Step 2: Read r Step 3: Calculate A=3.14*r*r C=2*3.14*r Step 4: Print A, C Step 5: Stop
Now, that you have your algorithm, you should start translating it into a program. Try to keep it simple as possible, and be careful with brackets and semicolons (you’re not working with Python), they will bring your program crashing down. Any text editor (such as Onlinegdb, Programiz, Jdoodle, Interviewbit and others) can be used to write C program source code. Here, we have used InterviewBit’s online compiler to write code, make sure to sign in to save your work for future use. Try inserting comments ( beginning with ‘/*’ and ending with ‘/*’). Although comments are not required, it is a good practice to provide them for readability and comprehension purposes. Remember to start your program with ‘ #include<stdio.h>’, failing to include the header file will result in, the inexecution of program.
Implement conditional branching and iteration
This is the fun part. It may be necessary to iterate a few times while simplifying and optimizing code, identifying ways to further simplify and optimize code. Using loops in C, you can run a series of instructions repeatedly ( for, while…, do…while loops used for multiple iterations). They are efficient and time-saving. Conditions can be generated using: (if-else, else if, if), or by using ternary operators. A switch can be used to create a variety of menu-driven programs. Try playing around with loops to develop a better understanding of them.
Although blank spaces are allowed between an operand and an operator, no space is permitted between the components of an operator (like > = is not allowed, it should be >=). Therefore, writing x==y is correct but writing x= =y is not acceptable in C language. Take out a piece of paper and work through the problem manually for simplicity. Consider at least three data sets that you can use. Also, consider the possibilities on the outside. It’s easy to overlook the steps when you’re initially starting out. Writing pseudo-codes in such cases can be of great help. Refer back to the problem to make sure you are correct.
Using Functions and Recursion
Using the divide and conquer method, decompose a problem into functions and synthesize a complete program. In C, there are four different ways to declare and call a function.
- Function with an argument with return value.
- Function with an argument without return value.
- Function without argument without return value.
- Function without argument with return value.
Ask yourself, What is the purpose of this function? What am I returning at the end of this function?
Recursion (a function that calls itself) improves the speed of a program’s execution while also making it compact and easier to understand. They are good for programs that have a complex iterative approach ( eg, find the largest number among n numbers using a function ). Nested loops can be simply avoided while using them.
Quick tip- Break apart larger C projects into several modules.
Using arrays, pointers, and structures, to create algorithms and program
Have you ever wanted to know how to program a matrix? Well, 2-D arrays are here to help you out. Using arrays and pointers, you can save substantial time. They can be used to store a variety of data type such as int, float, long int, double, char, etc of any particular type. Accessing the address of a variable can be done by using pointers. Allocation and de-allocation become simple.
(To get a better hold on topic, apply to solve matrix addition and multiplication, searching and sorting problems using C language )
Keep in mind, C does not permit arrays of bit fields, pointers to bit fields, and function returning bit fields. C permits ordinary member variables along with fields as structure members. In all implementations, the default integer type for a bit field is unsigned.
Test and effectuate the programs
Compiling and running a C program is usually straightforward; the tricky part comes next. Your code may have some errors, choose one error at a time, correct its syntax and look for logical fallacies. Some common errors are: Initialization errors, stack over-flow, compile-time error, Boolean expression flaws, type conversion ( while type conversion is done implicitly, typecasting has to be done explicitly by the programmer. Typecasting is done when the value of higher data type has to be converted to lower data type.), and several more. When the code is free of errors, it will get executed.
Quick tip- Remember, C is a case sensitive language. Typing scanf function as Scanf will generate an error.
Debugging your program is essential for its execution. Remember syntax will come naturally over time. The execution of the above program is:
How in school, most of us used to dread solving math questions. Often our approach to questions was abstract and our methods were incorrect. Programming in some ways is similar to math; it requires practice and an open approach to problem-solving. Solving a bunch of questions, developing your own algorithm, creating different codes for the same problem, and understanding the basics of C Programming Language will make you a pro in no time.
Keep pushing yourself. You improve as a developer with each problem you solve. Celebrate each success, however small and be sure to remember how far you’ve come.
By engaging with this subject, you will learn to think, solve problems and make informed decisions.
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