我可以在调用者处将函数参数的值默认为_FILE__吗？在C++中，我可以对一个默认的函数有缺省的参数：和\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu>定义在头文件中提供默认值时不使用宏？_C++_C Preprocessor_Optional Arguments

我可以在调用者处将函数参数的值默认为_FILE__吗？在C++中，我可以对一个默认的函数有缺省的参数：和\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu>定义在头文件中提供默认值时不使用宏？

c++

我可以在调用者处将函数参数的值默认为_FILE__吗？在C++中，我可以对一个默认的函数有缺省的参数：和\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu>定义在头文件中提供默认值时不使用宏？,c++,c-preprocessor,optional-arguments,C++,C Preprocessor,Optional Arguments,你不能，但是你可以用一个额外的宏来实现这个行为。例如： #DEFINE THROW(e) throwException(e, __FILE__, __LINE__); 另一方面，\uu PRETTY\u函数不是标准的

你不能，但是你可以用一个额外的宏来实现这个行为。例如：

#DEFINE THROW(e) throwException(e, __FILE__, __LINE__);

另一方面，

\uu PRETTY\u函数

不是标准的