【单选题】Sandy is a sales associate who is helping an obnoxious customer. The customer is complaining about a product he just purchased. Sandy smiles and politely helps the customer even though she is annoyed ...
【简答题】有以下程序 class Circle{ int radius; public: Circle(int r) { radius=r; } }; 则对 class circle 调用正确的有()A. Circle c1; B. Circle c1 ( 5 ) ; C. Circle c1 ( 5,6 ); D. Circle c1 ( 10 ) ; Circle c2(c1);