Pointers in C

A pointer is derived data type in c.it is built from one of the fundamental data type available in c programming.pointers can be used to access and manipulate data stored in the memory.

Pointer Variables

data_type *pointer_name;						
							

The * tells that the variable pointer_name is a pointer variable.

pointer_name needs a memory location.

pointer_name points to a variable of data_type.

int *age;							
							

Initialization of Pointer Variables

int age;
int a; /* Declaration */

a = &age;	/* Initialization */						
							

Example of Pointer

#include 
void main()
{
	int *ptr,no;
	no = 10;
	
	ptr = &no;
	
	printf(“%d”,*ptr);
	return 0;
}							
							

Output

10							
							

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