C

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C is a small, general-purpose, imperative programming language with a static type system, scopes, and structures. It's typically used as an alternative to assembly programming, such as in operating systems.
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Track mentors

22 Mentors

Our mentors are friendly, experienced C developers who will help teach you new techniques and tricks.
Track students

12,866 Students

Join thousands of students who have enjoyed learning and improving their skills by taking this track.
Track exercises

69 Exercises

Hundreds of hours have gone into making these exercises fun, useful, and challenging to help you enjoy learning.

About C

#include <stdio.h>

int main(int argc, char* argv[]) {
	printf("Hello, World!\n");
}

C is a general purpose language, used for a wide range of applications, from embedded computers to high-performance computing clusters.

C is commonly found in low level applications as it's a good alternative to harder-to-read assembly languages. It can be compiled to assembly to keep the same level of performance, while increasing readability, and providing a small level of safety with static types!

C was created by Dennis Ritchie at Bell Labs, and used to re-implement the Unix operating system. Now, it's one of the most used programming languages, with many compilers supporting providing support for most available hardware and platforms - there's plenty of resources and support available to help you get started!

Join the C track

Exercism is a great website

Exercism is a great website where I was able to have some very interesting challenges.

Relaxed. Encouraging. Supportive.

Meet the C Track mentors

Once you join the C language track, you will receive support and feedback from our team of mentors. Here are the bios of a few of the mentors of this track.

Avatar of Karthik Nayak

Karthik Nayak https://github.com/KarthikNayak

The language which got me interested in programming. Most of my open source contributions have been in C.
Avatar of Gargi Sharma

Gargi Sharma https://github.com/gs0510

C was the first programming language I learnt and it still is one of my favorites. I wrote C professionally for Linux Kernel!
Avatar of Larry Ruane

Larry Ruane https://github.com/LarryRuane

I've been a C programmer for many years. I used to work at Bell Labs.
Avatar of Andrew Lucas

Andrew Lucas https://github.com/andrewcrlucas

20+ years as an embedded C developer, loves working in Python where applicable and a Rust newbie
Avatar of Rishikanth Chandrasekaran

Rishikanth Chandrasekaran https://rishikanthc.com

I am currently a PhD Student in CSE at University of California - San Diego. My interests are in Machine Learning & Embedded Systems. I love programming in C. It was the first language I learnt. I work a lot in systems and hence write a lot of firmware code in C. I've started using Python as well for ML applications. Outside of research I enjoy reading and outdoor activities.
Avatar of Sherwood Nelson

Sherwood Nelson https://github.com/setn4me

I am very interested in the theory of OS. Most OS kernels were written in C, for example, the Linux kernel. I would like to teach beginners programming in C, because C uses a large number of low-level concepts that every programmer should know.
Fun. Challenging. Interesting

Community-sourced C exercises

These are a few of the 69 exercises on the C track. You can see all the exercises here.

Word Count
easy
filtering
memory management
strings
structs
Sieve
easy
control flow if statements
memory management
math
Hello World
easy
strings
Roman Numerals
easy
arrays
control flow loops
memory management
strings
structs
Atbash Cipher
medium
control flow if else statements
control flow loops
strings
Circular Buffer
easy
control flow if else statements
control flow loops
memory management
arrays
pointers
structs
flexible array members
buffers
Passionate. Knowledgeable. Creative.

Meet the C Track maintainers

The C Maintainers are the brains behind the C Track. They spend their spare time creating interesting and challenging exercises that we can all learn from. We are incredibly grateful for their hard work. Here are the bios of a few of the maintainers of this track.

Avatar of Barrett

Barrett

This maintainer has not added their bio yet.
Avatar of Ryan Hartlage

Ryan Hartlage

This maintainer has not added their bio yet.
Avatar of Toby

Toby My GitHub Profile

This maintainer has not added their bio yet.

Get started with the C track. As with everything on Exercism, it's 100% free!

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