//7_8.cpp
#include <iostream>
using namespace std;
class B0	//聲明基類B0
{
public:	//外部接口
	int nV;
	void fun(){cout<<"Member of B0"<<endl;}
};
class B1: virtual public B0	//B0為虛基類，派生B1類
{
public:	//新增外部接口
	int nV1;
};
class B2: virtual public B0	//B0為虛基類派生B2類
{
public:	//新增外部接口
	int nV2;
};
class D1: public B1, public B2	//派生類D1聲明
{
public:	//新增外部接口
	int nVd;
	void fund(){cout<<"Member of D1"<<endl;}
};
int main()	//程序主函數(shù)
{
	D1 d1;	//聲明D1類對(duì)象d1
	d1.nV=2;	//使用直接基類
	d1.fun();
}