C – Pointers in C

Introduction:

• Pointers is a derived data type in C.
• Pointer type variables store addresses of memory locations.

Pointers classified into:

• Typed: These pointers can point to specific type data
  • int* –> points to integer data
  • float* –> points to float data
  • struct Emp* –> points to Emp data

• Un-typed: Can points to any type of data. It is also called Generic pointer.
  • void* –> can points to any data.

Operators using with Pointers: Every operation in data processing using pointers is possible through 2 operators.

1. Address Operator (&): It returns the memory address of specified variable.
2. Pointer operator (*): It returns the value in the specified address.

Following program explains the memory representation of pointer variables: