POINTER

What is pointer?

• Pointer is a variable which is used to store address of another variable.


• A pointer variable is declared with a '* ' symbol. for eg: int *x;


• While assigning a value to the pointer variable '& ' operator is used before another variable whose address is being given to the pointer. for eg: x=& a;


• To reach to the value of the variable which is being pointed out '*' symbol is used. for eg: printf("%d",*x);


• Pointer to Pointer Variable: This variable is used to point out a pointer variable. Here we use '**'. for eg: int**y;

Input	Output
#include<stdio.h> main() { int a,b; int *d,*e,**f; clrscr(); a=10; b=20; d=&a; e=&b; f=&e; printf("%d\n%d\n%d\n%d\n",a,b,*d,e,*f); getch(); }