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Èç¹û»ùÀàÎö¹¹º¯Êýǰ²»¼Óvitual£¬ÅÉÉúÀà¶ÔÏó±»Ïú»Ùºó£¬Ö»»áµ÷ÓûùÀàµÄÎö¹¹º¯Êý£¬¶ø²»»áÈ¥µ÷ÓÃÅÉÉúÀàµÄÎö¹¹º¯Êý¡£
2¡¢¶ÔÓÚÕý³£µÄº¯Êý£¬Èç¹û»ùÀàÖÐÉùÃ÷Ϊvirtual£¬ÔòÅÉÉúÀà¿ÉÒÔ²»ÓÃÔÙдvirtual
// CPPTest.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
class Base
{
public:
Base(){}
virtual ~Base()
{
printf("Base Destructor!\n");
}
virtual void Func()
{
printf("Base Func!\n");
}
private:
int m_iData;
};
class Derived : public Base
{
public:
Derived(){}
~Derived()
{
printf("Derived Destructor!\n");
}
void Func()
{
printf("Derived Func!\n");
}
};
class Derived2 : public Derived
{
public:
Derived2(){}
~Derived2()
{
printf("Derived2 Destructor!\n");
}
void Func()
{
printf("Derived2 Func!\n");
}
};
int main(int argc, char* argv[])
{
Base *pb = new Base;
pb->Func();
Base *pd = new Derived;
pd->Func();
Base *pd2 = new Derived2;
pd2->Func();
delete pb;
delete pd;
delete pd2;
return 0;
}
 
½á¹û£º
Base Func!
Derived Func!
Derived2 Func!
Base Destructor!
Derived Destructor!
Base Destructor!
Derived2 Destructor!
Derived Destructor!
Base Destructor!


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