Itachi7

摘要： 1. 如何用虚函数实现多态 1 class A 2 { 3 public: 4 virtual void print() 5 { 6 cout<<"THIS IS A"<<endl; 7 } 8 }; 9 class B:public A10 {11 public:12 void print()13 {14 cout<<"THIS IS B"<<endl;15 }16 };17 int main()18 {19 A a;20 B b;21 A* p1 = &a;22 A* p2 = ... 阅读全文