chapter1-19.cpp

STL程序员开发指南源码

//文件名：CHAPTER1-19.cpp
#include <iostream.h>
class Base
{
  public: 
	virtual ~Base() { cout<< "~Base" << endl ; }
};
class Derived : public Base
{
  public: 
	virtual ~Derived() { cout<< "~Derived" << endl ; }
};
void main(void)
{
	Base * pB = new Derived;  // upcast
	delete pB;
}