At last the players from China ________ 发布时间:2017-04-30 15:53 │ 来源:www.tikuol.com 题型:选择题 问题: At last the players from China ________ others.[ ]A.winB.wonC.beat
题型:选择题 有如下程序: #include<iostream.h> Using namespace std; Class Demo public: Demo() cout<<“default constructor\n”; Demo(const Demo &x) cont<<“copy constructor\n”; ; Demo usercode(Demob)Demo c(b);return c; int main() Demo a;d; cout<<“Calling usercode()\n”; d=usercode(a); return 0; 执行上面程序的过程中,构造函数Demo()和Demo(const Demo &x)被调用的次数别是( )。A.1和1B.1和2C.2和3D.2和4 查看答案