agavrel/42_CheatSheet

Free

A comprehensive guide to 50 years of evolution of strict C programming, a tribute to Dennis Ritchie's language

FreeFree tier

Type

Open Source

Visit Website GitHub (38 stars)

About agavrel/42_CheatSheet

A comprehensive C programming cheat sheet created for 42 School students, alumni, and candidates. It covers 50 years of strict C programming evolution, including the piscine (bootcamp) preparation, common beginner mistakes (segmentation faults, memory leaks, undefined behavior), clean code practices, programmer tools (editors, Git, bash), and curated learning materials on algorithms, networking, security, computer graphics, and more. The guide includes tutorials on optimization (multithreading, vectorization), computer graphics with SDL2 (e.g., Barnsley Fern fractal), and hacking (buffer overflow). It also provides code examples for basic functions like ft_putchar, ft_strlen, and ft_putstr.

Key Features

Comprehensive C programming reference for 42 School

Covers piscine (bootcamp) preparation and success criteria

Lists common beginner mistakes with explanations (e.g., array overflow, segfault, bus error, stack smashing)

Teaches clean code principles: meaningful names, short functions, structures, flags, Makefile flags, DEBUG macros, branching optimization

Includes programmer tools: code editors, terminal/bash, Git, productivity gains, PATH, computer graphics libraries

Curated learning materials for C, algorithms, bitwise manipulations, network, security/hacking, graphics, AI, optimization, assembly, functional programming, computer architecture

Tutorials on optimization (flags, multithreading, vectorization, algorithm choice), computer graphics with SDL2, and hacking (buffer overflow, shellcode execution)

Code examples: ft_putchar, ft_strlen, ft_putstr, and more

Available in English and Korean

Open source on GitHub

Pros & Cons

Pros

Comprehensive and well-structured table of contents
Covers both fundamentals and advanced topics (optimization, hacking, graphics)
Includes practical tutorials with code examples
Free and open source
Available in multiple languages (English, Korean)
Community-contributable (PRs welcome)
Specifically tailored to 42 School's curriculum and norminette

Cons

Primarily targeted at 42 School students; less useful for general C learners
Not a full course; it's a reference and guide
Some sections may require prior C knowledge
Hosted only on GitHub; no dedicated website or interactive features
May become outdated if 42 School's curriculum changes

Best For

Preparing for 42 School's piscine (intensive C bootcamp)Learning or refreshing strict C programming best practicesUnderstanding common C pitfalls and undefined behaviorWriting clean, optimized C codeExploring computer graphics or basic exploitation techniques through tutorialsUsing as a reference guide during 42 School projects