摘要：
1 #include<iostream> 2 using namespace std; 3 4 class base 5 { 6 public: 7 base(){} 8 virtual void fun(){cout<<"base.fun";} 9 };10 11 class derive:public base12 {13 public:14 derive(){}15 void fun(){cout<<"derive.fun";}16 };17 18 int main()19 {20 base *b... 阅读全文
