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

9,237 Students

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

66 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

A tremendous learning opportunity to explore the depth of your own knowledge

Exercism is fantastic in learning new languages but that is not the extent of it. If you are a "more experienced" programmer you may have encountered impostor syndrome: the idea you don't really know what you think you know. Exercism lets you solve problems and put them in the space of open feedback which is a tremendous learning opportunity to explore the depth of your own knowledge. Even if you have been programming in a language for awhile it is worth checking into Exercism to see where you stand with current implementation practices.

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 Anandakumar U

Anandakumar U LinkedIn

I've been professionally developing C applications for over 8 years now. Interested in Go, JS, TS and Java. Love to teach anybody programming and love to learn anything from anybody too!
Avatar of Giacomo Guiulfo

Giacomo Guiulfo https://github.com/giacomoguiulfo

C is my favorite programming language because of the simplicity it offers and the fact that you can really be in 'total' control of programs written with it. I've programmed in C professionally, at school and for many personal projects.
Avatar of Ajo John

Ajo John https://github.com/ajomadlabs

I love Javascript. Great fan of Vuejs. Loves Open Source.
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 Bob Forgey

Bob Forgey https://github.com/sesamemucho

I've been using C for a long time, mostly doing embedded systems development. I still enjoy programming in C. I value clarity over cleverness.
Avatar of Daniel Heater

Daniel Heater http://www.heatertech.com

I've been writing code for 35+ years and I continue to learn things when I read another person's code
Fun. Challenging. Interesting

Community-sourced C exercises

These are a few of the 66 exercises on the C track. You can see all the exercises here.

Acronym
easy
control flow loops
memory management
strings
Atbash Cipher
medium
control flow if else statements
control flow loops
strings
Gigasecond
easy
dates
Isogram
easy
arrays
control flow if else statements
control flow loops
strings
Secret Handshake
easy
algorithms
control flow if statements
strings
Crypto Square
medium
algorithms
control flow if statements
strings
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 Toby

Toby My GitHub Profile

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

Ryan Hartlage

This maintainer has not added their bio yet.

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

Join the C Track