Dynamic_cast Total:65 Accepted:22 Time Limit:1sec Memory Limit:256MB Description Three classes A,B and C are shown below:class A { public:virtual~A(){};};class B:public A {};class C:public B {};You are to implement a ...
include using namespace std;class Time { public:Time(int h,int m,int s):hour(h),...我想问 fun函数写成void fun(Time t),同样可以做到函数不能修改t1的值,那这个常引用存在的意义是什么?或者请哪位大神可以举一个常引用应用的例子