A while ago I have discovered an (rather ancient) C Compiler, which scanned macros this way (Pseudo code):

 if line.startswith("#include") or line.startswith("#define"):
     ...

.. Which kind of raised the question for me where macros should really be placed, at the beginning of a line, like so:

void stuff()
{
#if defined(WIN32) || defined(_WIN32)
    ...
#else
#if defined(__GNUC__)
    ...
#else
    ...
#endif
#endif
}

Or rather like so (as that's the way I do it, for improved readability):

void stuff()
{
    #if defined(WIN32) || defined(_WIN32)
    ...
    #else
    #   if defined(__GNUC__)
    ...
    #   else
    ...
    #   endif
    #endif
}

Is the way one indents the Preprocessor code standardized, that is, no matter how i indent it, it will always work the same way?

c++ c c-preprocessor
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