#include <stdio.h>

long *p;

void a(void);
void b(void);
void c(void);

int main(void)
{
	long m = 10;
	p = &m;
	printf("&m = %u\n", (unsigned long)p);
	a();
	
	return 0;
}

void a(void)
{
	long a = 20;
	printf("&a = %u\n",(unsigned long) &a);
	b();
}

void b(void)
{
	long b = 30;
	printf("&b = %u\n",(unsigned long) &b);
	c();
}

void c(void)
{
	long c = 40;
	printf("&c = %u\n\n", (unsigned long)&c);
	printf("m = %ld\n", *(long*)(p));
	printf("a = %ld\n", *(long*)(p - 12));
	printf("b = %ld\n", *(long*)(p - 24));
	printf("c = %ld\n", *(long*)(p - 36));