c++面试题

// cpp.cpp : 定义控制台应用程序的入口点。//#include "stdafx.h"#include<iostream>using namespace std;class A {public:A() { }virtual  void f() {cout << "A::f()\n";}void f()const {cout << "A::f() const\n";}}; A::A(){}  class B:public A{public: void f() {cout << "B::f()\n";}void f() const {cout << "B::f() const\n";}};void g(const A* a) {a->f();};int main(int argc,char *argv[]){ A *   p = new B(); p->f();g(p);delete(p);system("pause");    return 0;}

答案输出:

B::f()

A::f() const