摘要： 以前看来#号，好像只是预编译，原来它还可以有跟Swift中"\( )"的拼接功能 例如： #define string(x) #x 意思就是 string(x) = "x"; 然后还是一个高级拼接： #define printxvar(n) printf("%i\n", x ## n) 意思就是输出 阅读全文

摘要： Macros A definition that takes arguments, particularly more than one, is often known as a macro: #define SQUARE(x) x * x Incidentally, the previous de 阅读全文