C Pointers

We can access computer's memory address using pointer.

What is memory address? Let's see that first.

A variable is given a memory in the compiler. We call it memory address.

Eg:

int a=45;

a is the variable. 45 is the value of the variable. 1004 is the memory address. The memory address contains the hexa decimal numbers.

Address of variable:

The memory address of a variable depends on the computer we are using.

Address operator(&) is used to find the memory address of a variable in C language.

syntax:

&variable name

Eg:

a=&b;

printf(“variable address:%d”,&b);

Declaring And Initializing Pointer:

To declare a pointer variable, put '*' before the variable.

Syntax:

datatype *variable;

Eg:

int *b;

b is an integer type pointer variable.