摘要：#includeusing namespace std;class Animal { public: Animal(){} Animal(int weight, int height){} void eat(){ cout breath()调用的确是父类的breath*/Animal *An=new... 阅读全文

摘要：ifndef bmw_h #define bmw_hclass W { public: virtual void f(void) = 0;//纯虚函数=0 virtual void g(void) = 0; //纯虚函数 virtual void h(void) = 0; virtual voi... 阅读全文