Pointer to Pointer

Pointer to Pointer

#include<stdio.h>

void main()

{

                int a = 5;

                int *p;

                int **q;

                p = &a;

                q = &p;

                printf("\n a = %d", a);

                printf("\n &a = %p", &a);

                printf("\n  p = %p",  p);

                printf("\n  *p = %d",  *p);

                printf("\n  &p = %p", &p);

                printf("\n q = %p", q);

                printf("\n  *q = %p", *q);

                printf("\n  **q = %d", **q);

                printf("\n &q = %p", &q);

}

Output:

 a            = 5

 &a         = 0028FF44

 p            = 0028FF44

 *p          = 5

 &p         = 0028FF40

 q            = 0028FF40

 *q          = 0028FF44

 **q        = 5

 &q         = 0028FF3C