C++的问题：使用基类成员函数的指针产生多态性，对输出结果不理解
#include <iostream>using namespace std;
class base{
public:
virtual void print(){cout<<"In Base"<<endl;}
};
class derived:public base{
public:
void print(){cout<<"In Derived"<<endl;}
};
void display(base *pb,void (base::*pf)())
{(pb->*pf)();}
void main(){
derived d;
base *pb=&d;
void (base::*pf)();
pf=base::print;
display(pb,pf);
}
就这个程序，我以为它会出现“In Base”的，结果它给我看“In Derived”。不能理解，请求指点。谢谢！
