Unit 1: Introduction to C — Structure, Data Types, Variables, Operators

Unit 2: Control Structures — if-else, switch, loops (for, while, do-while)

Unit 3: Functions — User-Defined Functions, Recursion, Scope

Unit 4: Arrays & Strings — 1D/2D Arrays, String Functions

Unit 5: Pointers — Pointer Arithmetic, Pointer to Array, Dynamic Memory Allocation

Unit 6: File Handling — fopen, fclose, fread, fwrite