#IF #ELSE #ENDIF : Preprocessor IF « Macro Preprocessor « C / ANSI-C

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C / ANSI-C » Macro Preprocessor » Preprocessor IF

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#IF #ELSE #ENDIF



//file1.h

#define USD 1



//file2.h

#define UKP 1



//file3

#include <stdio.h>

#include <file1.h> 



#if (defined (USD))  

    #define currency_rate 46

#else

    #define currency_rate 100 

#endif 



main() {    

  int rs;

  rs = 10 * currency_rate;

  printf ("d\n", rs);

}

Related examples in the same category

1.	IF and endif preprocessor
2.	ifdef preprocessor

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