#include <cstdio>
 
class CBase
{
public:
	CBase()
	{
		printf("CBase::CBase()\n");
	}
	virtual ~CBase()
	{
		printf("CBase::~CBase()\n");
		this->Destroy();
	}
	virtual void Destroy()
	{
		printf("CBase::Destroy()\n");
	}
};
 
class CChild : public CBase
{
public:
	CChild()
	{
		printf("CChild::CChild()\n");
	}
	virtual ~CChild()
	{
		printf("CChild::~CChild()\n");
	}
	virtual void Destroy()
	{
		printf("CChild::Destroy()\n");
	}
};
 
int main()
{
	printf("a\n");
	CChild a;
	printf("b\n");
	CBase* b = new CChild;
	printf("delete b\n");
	delete b;
	printf("delete a\n");
	return 0;
}

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