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C Programming Tutorial

Learn modern C (C23) step by step, from your first program to pointers, memory, files and Makefiles.

32 free lessons Beginner to Advanced Covers C23 (C17 compatible)

Start the first lesson

Getting Started

  1. 1C Introduction
  2. 2Install GCC/Clang & VS Code
  3. 3Your First C Program

Basics

  1. 4Variables
  2. 5Data Types & bool
  3. 6Sizes, Limits & Overflow
  4. 7Constants: const, #define & constexpr
  5. 8Operators & Precedence
  6. 9Input & Output: printf, scanf & fgets

Control Flow

  1. 10if, else if & else
  2. 11switch Statements
  3. 12Loops: while, do-while & for

Functions

  1. 13Functions & Prototypes
  2. 14Scope & Storage Classes
  3. 15Recursion

Arrays & Strings

  1. 16Arrays
  2. 17Strings

Pointers & Memory

  1. 18Pointers, NULL & nullptr
  2. 19Pointer Arithmetic & Arrays
  3. 20Dynamic Memory: malloc, calloc, realloc & free

Structures & Types

  1. 21Structures (struct)
  2. 22Unions, Enums & typedef

Files & Larger Programs

  1. 23File Handling
  2. 24The Preprocessor & Macros
  3. 25Header Files & Multi-file Programs
  4. 26Makefiles
  5. 27Command-line Arguments

Advanced C

  1. 28Bit Manipulation
  2. 29Debugging with gdb & Sanitizers
  3. 30Undefined Behaviour & Common Bugs
  4. 31C Standards: K&R to C23
  5. 32Project: Student Marks Manager

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