p9_8.cpp

来自「相当丰富的C++源码」· C++ 代码 · 共 40 行

//**************************************
//** p9_8.cpp                         **
//**  删除动态对象虚析构函数的调用    **
//**************************************
#include<iostream>
using namespace std;
class A
{
public:
    virtual ~A()            //虚析构函数
   {  
        cout<<"A::~A() is called."<<endl; 
   }
   A() 
   {
    cout<<"A::A() is called."<<endl; 
   }
};
class B: public A          //派生类
{
private:
	int  *ip;
public:
	B(int size=0)
	{	
       ip=new int[size]; 
       cout<<"B::B() is called."<<endl;
	}
	~B()
	{ 
	 cout<<"B::~B() is called."<<endl; 
	 delete []  ip;
	}
};
void main()
{
	A *b=new B(10);          //类型兼容
    delete b;
}