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Editorial Team
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Asked: 2026-06-04T14:09:23+00:00

it’s possible to write something like this? #define ISWINDOWS() (#if defined(_WIN32) || defined(_WIN64) \

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it’s possible to write something like this?

#define ISWINDOWS() (#if defined(_WIN32) || defined(_WIN64) \
                        1 \
                   #elif  \
                        0 \
                  #endif)

and then: 

void foo() {
  if(ISWINDOWS()) {
   // ..
  } else {
   // ...  
 }
}
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1 Answer

  1. Editorial Team

    You cannot define a macro within a macro. You can do this, but its probably not what you want:

    #if defined(_WIN32) || defined(_WIN64)
    #define ISWINDOWS() 1
#elif 
    #define ISWINDOWS() 0
#endif
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