题目:【填空题】#include using namespace std;class Ratio{int num,den;public:Ratio(int n=0, int d=1){num=n;den=d;cout<<"Common constructor called"< 喵查答案:1、Common constructor called 2、Ratio x is:40/9 3、Copy constructor called 4、Ratio y is:40/9 喜欢 (0)