C Program to demonstrate double pointer

Program

#include<stdio.h>
void main()
{
    int a = 123;
    int *ptr;
    int **dblptr;
    ptr = &a;
    dblptr = &ptr;
    printf("Value of a is:\t%d\n", a);
    printf("Value of a using single pointer is:\t%d\n", *ptr);
    printf("Value of a using double pointer is:\t%d\n", **dblptr);
}

Output

Value of a is:  123
Value of a using single pointer is:     123
Value of a using double pointer is:     123