c17_05.cpp

it can help you use C++ program we

#include <iostream >
using namespace std;

class Base
{
public:
	Base(){}
	virtual ~Base()
	{
		cout <<"调用Base::~Base"<<endl;
	}
};

class Derived : public Base
{
public:
	Derived(){}
	~Derived()
	{
		cout<<"调用Derived::~Derived" <<endl;
	}
};

int main()
{
	Base *pob_b = new Derived; //可以让基类类型的指针指向派生类对象
	delete pob_b;

	return 0;
}