test.cpp

#include <iostream>
using namespace std;
class Base0
{
public:
    Base0(int var) : var0(var) {}
    int var0;
    void fun0() { cout << "Member of Base0" << endl; }
};
class Base1 : virtual public Base0
{
public:
    Base1(int var) : Base0(var) {}
    int var1;
};
class Base2 : virtual public Base0
{
public:
    Base2(int var) : Base0(var) {}
    int var2;
};
class Derived : public Base1, public Base2
{
public:
    Derived(int var) : Base0(var), Base1(var), Base2(var)
    {
    }
    int var;
    void fun()
    {
        cout << "Member of Derived" << endl;
    }
};
int main()
{ //程序主函数
    Derived d(1);
    d.var0 = 2; //直接访问虚基类的数据成员
    d.fun0();   //直接访问虚基类的函数成员
    return 0;
}