#include <stdio.h>
#include <stdlib.h>

int *p;

void dfun1(int x, int y)
{
	int *z;

	z = (int *) malloc(sizeof(int));

	p = z;
	*z = x + y;

	printf("Inside dfun1: &x = %p, &y = %p, &z = %p, &p = %p\n", &x, &y, &z, &p);
	printf("Address stored in z: %p\n", z);
}

void dfun2() {
	printf("Inside dfun2: The value p is pointing to is: %d\n", *p);
}

int main() {
	printf("Address stored in p before calling dfun1: %p\n", p);
	dfun1(10, 20);
	printf("Address stored in p after calling dfun1: %p\n", p);
	printf("Value pointed to by p: %d\n", *p);	
	dfun2();
	free(p);
}