类的继承

#include<iostream>
using namespace std;
class Base0{
public:
int var0;
void fun0(){
cout<<"Member of Base0"<<endl;
}
};
class Base1:public Base0{
public:
int var1;
};
class Base2:public Base0{
public:
int var2;
};
class Derived:public Base1,public Base2{
public:
int var;
void fun(){
cout<<"Member of Derived"<<endl;
}
};
int main()
{
Derived d;
d.Base1::var0=2;
d.Base1::fun0();
d.Base2::var0=3;
d.Base2::fun0();
return 0;
}