#include<stdio.h>
int main(void)
{
    int a;
    volatile int b;
    volatile int c;
    int d;
    printf("%p\n", (void*)&a);
    printf("%p\n", (void*)&b);
    printf("%p\n", (void*)&c);
    printf("%p\n", (void*)&d);
    return 0;
}