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Asked: 2026-06-01T18:39:03+00:00

I have following preprocessor (code) block in my project before each function definition to

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I have following preprocessor (code) block in my project before each function definition to unclutter the logging Macro. 

#ifdef FC_NAME
#undef FC_NAME
#endif

#define FC_NAME  "myFunctionName"

But this itself looks kind of cluttered.

So, I am looking at replacing this with something that looks simpler and tried this

#define REDEF_FC_NAME(funcName) #ifdef FC_NAME \
\                                 #undef FC_NAME \
\                               #endif \
\                               #define FC_NAME funcName \

But this gives error saying macro def within a macro. So, is there a way of achieving the same effect?

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1 Answer

  1. Editorial Team

    The short answer is: you can’t do that with macros.

    But:

    In C++, every function has a predefined __func__ variable.

    GCC offers this as an extension to C, as I’m sure do many other compilers. On Windows, there appears to be the __FUNCTION__ macro (see http://msdn.microsoft.com/en-us/library/b0084kay(v=vs.71).aspx).

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