a_9_3.cpp

C++应用教程原码,里面包含该书中有十三章内容的代码,详细具体

#include "stdafx.h"
#include <iostream>
#include <string>
using namespace std;
class A {
public:
	virtual ~A()
	{cout << "调用了类A中的虚析构函数"<<endl;}
};
class B:public A {
public:
	B(int i) 
	{ buffer =new char[i];}
	~B()
	{cout << "调用了类B中的虚析构函数"<<endl;}
private:
	char* buffer;
};

void main()
{ B *b = new B(256);
  A *a = b;
  delete a;
  cin.get(); //等待结束，以便调测程序，可以删除
}