exam4.cpp

C++语言程序设计题典

#include <iostream.h>
class A
{
public:
	int n;
};
class B:virtual public A {};
class C:virtual public A {};
class D:public B,public C
{
	int getn() { return B::n; }
};
void main()
{
	D d;
	d.B::n=10;
	d.C::n=20;
	cout << d.B::n << "," << d.C::n << endl;
}