摘要： 引述自http://c-programming.itags.org/q_c-programming-language_191518.html源代码中的宏min中使用了 (void) (&_x == &_y); （ c89不支持typeof ）有如下解释Assuming (as the name "typeof" implies) that _x has the same type asx, and _y has the same type as y, comparing the addresses of _x and _yis legal if and on 阅读全文