A comprehensive tutorial covering C programming variables with examples and exercises.

1. Variable Basics: Declaration, definition, and naming rules
2. Data Types: Integer, float, double, character types
3. Initialization: Different ways to initialize variables
4. Memory Allocation: Stack vs heap memory
5. Scope & Lifetime: Local, global, and static variables
6. Type Modifiers: const, volatile, register
7. Type Conversion: Implicit and explicit casting

chmod +x compile_and_run.sh make ./compile_and_run.sh make run Run exercises: make exercises Clean build files: make clean rm -rf build chmod +x test_all.sh ./test_all.sh All tests completed! then:: make make run