e5.cpp

一、教学目的： 能理解C++中运算符重载的需要性

#include<iostream.h>          

class OBJ1
{
public:
	OBJ1(){cout<<"OBJ1"<<endl;}
};
class OBJ2
{
public:
	OBJ2(){cout<<"OBJ2"<<endl;}
};
class Base1
{
public:
	Base1(){cout<<"Base1"<<endl;}
};
class Base2
{
public:
	Base2(){cout<<"Base2"<<endl;}
};
class Base3
{
public:
	Base3(){cout<<"Base3"<<endl;}
};
class Base4
{
public:
	Base4(){cout<<"Base4"<<endl;}
};
class Derived:public Base1,virtual public Base2,public Base3,virtual public Base4
{
public:
	Derived():Base4(),Base3(),Base2(),Base1(),obj1(),obj2()
	{
		cout<<"Derived ok."<<endl;
	}
protected:
	OBJ1 obj1;
	OBJ2 obj2;
};
void main()
{
	Derived aa;
	cout<<"This is ok."<<endl;
}