👋Learning to code? Check out ourbrand new Bootcampfor beginners!
Join Exercism’s C Track for access to 82 exercises with automatic analysis of your code and personal mentoring, all 100% free.
Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.
Exercism's classic introductory exercise. Just say "Hello, World!".
Convert a number into its corresponding raindrop sounds - Pling, Plang and Plong.
Convert a resistor band's color to its numeric representation.
C is portable and can run on almost any platform and chipset.
Can be used for a wide variety of workloads from IoT to game engines.
Consistently rated as one of the highest performing languages for energy and time.
The C standard values stability and backwards compatibility, C programs can run for decades.
Allows both lower and higher level functionality, making it very powerful.
Consistently one of the most popular languages for everything from operating systems to firmware
Every language has its own way of doing things. C is no different. Our mentors will help you learn to think like a C developer and how to write idiomatic code in C. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in C - they'll help you discover the things you don't know that you don't know.
Learn more about mentoring
The C track on Exercism has 82 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.
See all C exercises
The best part, it’s 100% free for everyone.
