How to get the file separator symbol in standard C/C++ : / or \?

Question

I would like to write a function :

inline char separator()
{
    /* SOMETHING */
}

that returns the file separator of the system in standar

Answer 1

I'm not sure how to do it other than by checking ifdefs

inline char separator()
{
#ifdef _WIN32
    return '\\';
#else
    return '/';
#endif
}

or (as suggested by PaperBirdMaster)

const char kPathSeparator =
#ifdef _WIN32
                            '\\';
#else
                            '/';
#endif