C

Join the C Track
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.
Join the C Track
Track mentors

22 Mentors

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

9,173 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 Karthik Deepak Natraj

Karthik Deepak Natraj https://github.com/karbfg10k

I love Rust and C and use them at my day job in automotive. I work with Embedded software but I'm also reasonably familiar with systems programming as well
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 Quentin Laillé

Quentin Laillé https://github.com/QLaille

Epitech Student (Promotion 2021), I take time to shorten yours developing exciting projects.
Avatar of Alexis Lu

Alexis Lu https://github.com/luyiranl2010

I am using C and C++ for some years. C is more friendly when compile to assembly.
Avatar of Naris Rangsiyawaranon

Naris Rangsiyawaranon https://github.com/KittenHero

I'll take C over assembly any day.
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.
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.

Clock
easy
control flow if statements
preprocessor x macros in test
strings
text formatting
Nucleotide Count
easy
control flow loops switch if statements
memory management
strings
text formatting
Isogram
easy
arrays
control flow if else statements
control flow loops
strings
Series
easy
control flow if statements
memory management
strings
text formatting
Pascal's Triangle
easy
control flow if else statements
memory management
math
Armstrong Numbers
easy
control flow if else statements
control flow loops
math
logic
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