<code c>
/* p1.c: pointer example */

#include <stdio.h>

int main(void) {
    int *ip;
    int i = 5;
    int j = 3;

    ip = &i; 

    printf("%d %d\n", i, *ip);
    printf("%p\n", &i);
    printf("%p\n", ip);

    *ip = 7;

    printf("%d %d\n", i, *ip);

    ip = &j; 

    printf("%d %d %d\n", i, j, *ip);
    printf("%p\n", &i);
    printf("%p\n", &j);
    printf("%p\n", ip);

    int *ip2;

    ip2 = ip; 

    ip = &i; 

    printf("%d %d %d %d\n", i, j, *ip, *ip2);
    printf("%p\n", &i);
    printf("%p\n", &j);
    printf("%p\n", ip);
    printf("%p\n", ip2);

    return(0);
}
</code>