Pointers – Basics

A pointer holds the memory address of another variable.

int x = 10;
int *p = &x;   // p now points to x
printf("%d\n", *p); // dereference → prints 10

Key concepts:

• & address‑of operator.
• * dereference operator.
• Pointers are typed – an int* points to an int.
• Uninitialized pointers contain garbage addresses – always initialize them to NULL.