program to understand pointer's pointer

using codeblocks
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//understanding pointer's pointer
#include <stdio.h>

int main()
{
    int **p,*p1;                  //two pointer declaration
    int x=5;
    p1=&x;                        //stores address of x to pointer p1
    printf("first address p1=%d\n",p);//prints that first address
    p=&p1;                         //stores address of pointer by pointer
    printf("address p=%d\n",p);//prints that pointer's address
    return 0;
}

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using turboc++

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//understanding pointer's pointer

#include <stdio.h>

#include <conio.h>

int main()

{

    int **p,*p1;                  //two pointer declaration

    int x=5;

    p1=&x;                        //stores address of x to pointer p1

    printf("first address p1=%d\n",p);//prints that first address

    p=&p1;                         //stores address of pointer by pointer

    printf("address p=%d\n",p);//prints that pointer's address

   getch();

    return 0;

}