C Language Fundamentals & main()
Understand compiled machine code, header files, and the standard I/O library.
The Mother of Modern Languages
Created by Dennis Ritchie at Bell Labs, C is the foundation upon which operating systems (Linux, Windows, macOS), game engines, and modern interpreters are built.
Hands-On Code Examples & Sandbox
1 ExampleKey Concepts • Chapter 01
- •Every C program begins in int main() and ends with return 0;.
- •#include <stdio.h> imports standard input/output functions like printf.
- •Statements in C must terminate with a semicolon.
🎯 Chapter Practice Challenge
Add a printf line outputting your name.
Ready for the BEGINNER Assessment?
10 randomized questions with automated score & retake. Score 70% to pass!