#include <iostream>using namespace std;class A{public: int _a; A() { _a = 1; } void print() { cout << _a; }};class B : public A{public: int _a; B() { _a = 2; } void print() { cout << _a; }};class C : public B{public: int _a; C() { _a = 3; }};void main(){ /* B b; b.print(); cout << b._a; */ C c; c.print(); system("pause");}
相关资源：敏捷开发V1.0.pptx
