C Learning Path

A structured repository for learning C from beginner to expert.

Structure

Stage	Folder	Weeks	Topics
1 — Beginner	stage-1-beginner/	1–3	Syntax, types, arrays, strings, I/O
2 — Intermediate	stage-2-intermediate/	4–6	Pointers, memory, structs, files
3 — Upper-intermediate	stage-3-upper-intermediate/	7–9	Data structures, algorithms, POSIX
4 — Advanced	stage-4-advanced/	10–13	Concurrency, sockets, performance
5 — Expert	stage-5-expert/	Ongoing	ABI, allocators, security, lock-free

How to use

1. Work through each stage in order — later stages build on earlier ones.
2. Open the topic folder, read README.md, and complete the TODOs in the .c file.
3. Compile with: gcc -Wall -Wextra -Werror -g -o out <file>.c && ./out
4. Once all TODOs pass, tick the topic off in your checklist.

Compile flags cheat sheet

# Basic
gcc -Wall -Wextra -Werror -g -o out file.c

# With sanitisers (stage 3+)
gcc -Wall -Wextra -Werror -g -fsanitize=address,undefined -o out file.c

# Optimised + LTO (stage 5)
gcc -O2 -flto -o out file.c

Resources

• Beej's Guide to C Programming
• C reference — cppreference
• Modern C — Jens Gustedt (free PDF)
• Linux man pages