Definition:
A pointer is a variable that stores the memory address of another variable.

Declaration Syntax:

data_type *pointer_name;

Example:

int a = 10;

int *ptr;

ptr = &a;  // ptr holds the address of variable ‘a’

Accessing the value using a pointer:

printf(“%d”, *ptr);  // Outputs 10

Why Pointers?

• Used in dynamic memory allocation
• To access array elements more efficiently
• Used in functions to return multiple values
• Essential for building complex data structures like linked lists

Pointer Operators:

• & (Address-of operator)
• * (Dereference operator)