#include <stdio.h>

int *ptr1;

void foo( )
{
    int x = 5;

    ptr1 = &x;
}

int main( )
{
    int i = 0;

    foo( );

    printf( "The value of x is stored at %x and its value is %d\n", ptr1, *ptr1 );
    printf( "The value of x is stored at %x and its value is %d\n", ptr1, *ptr1 );

    return 0;
}