第20题: [单项选择]下列运算符不能重载为友元函数的是【 】 A. = ( ) [ ] -> B. + - ++-- C. > < >= <= D. +=- =*= /= 参考答案:A 答案解析:一般运算符重载可以采用成员函数方式或友元方式。但成员运算符(.),指向成员的指针->,赋值运算符,( )和[ ]是不能够重载为友元函数的运算符。对双目运算符,友元函数有两个参数;对单目运算符,友元函数
第21题: [单项选择]A. He may not have enough time to cook. B. He may spend more money on food next semester. C. He may gain weight if he does his own cooking. D. He may not enjoy cooking. 参考答案:A 答案解析:[听力原文] M: My roommate and I have decided to do our own cooking next semester. W: Then,