Final-Q1.cpp

#include <stdio.h>

class A
{
public:
	A() { printf("A\n"); }
	~A() { printf("~A\n"); }
	void p1() { printf("p1A\n"); }
	virtual void p2() { printf("p2A\n"); }
};
class B : public A
{
public:
	B() { printf("B\n"); }
	~B() { printf("~B\n"); }
	void p1() { printf("p1B\n"); }
	void p2() { printf("p2B\n"); }
};
class C : public A
{
public:
	C() { printf("C\n"); }
	virtual ~C() { printf("~C\n"); }
	void p1() { printf("p1C\n"); }
	void p2() { printf("p2C\n"); }
};
class D : public C
{
public:
	D() { printf("D\n"); }
	~D() { printf("~D\n"); }
};

B b;
int main()
{
	C* pc = new D;
	A* pa1 = pc;
	A* pa2 = &b;

	pa1->p1();
	pa1->p2();
	pa2->p1();
	pa2->p2();

	D d;
	d.p1();
	d.p2();

	delete pa1;

	return 0;
}