#include
int main(void)
{
int x = 99;
int *p1, *p2;
p1 = &x;
p2 = p1;
/* print the value of x twice */
printf("Values at p1 and p2: %d %d\n", *p1, *p2);
/* print the address of x twice */
printf("Addresses pointed to by p1 and p2: %p %p", p1, p2);
return 0;
}