gistfile1.cpp

#include <iostream>
#include <cstdlib>

using namespace std;

class A
{
public:
	A()
	{
		cout << "Init A..." << endl;
	}
	virtual ~A()
	{
		cout << "Dispose A..." << endl;
	}
};

class B : public A
{
public:
	B()
	{
		cout << "Init B..." << endl;
	}
	virtual ~B()
	{
		cout << "Dispose B..." << endl;
	}
};

void func()
{
	A* a = new B();
	delete a;
}

int main()
{
	func();
	system("pause");
}