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Listing 5

/* This macro could be moved into your personal header file */

#define  MH_CONCATTOKEN( name1, name2)  name 1 ## name2

/* Differentiate between Turbo and Quick C */

#if defined( __TURBOC__ )
     
          /* Turbo C version */

          #define   MH_PRG         prog1

          #define   MH_INCFILE_A   MH_CONCATTOKEN( MH_PRG, _a )
          #define   MH_INCFILE_B   MH_CONCATTOKEN( MH_PRG, _b )

#elif defined(  _QC  )

          /* Quick C version */

          #define   MH_INCFILE_A   MH_CONCATTOKEN( prog1, _a )
          #define   MH_INCFILE_B   MH_CONCATTOKEN( prog1, _b )

#else
          #error Possibly unsupported compiler encounter
#endif

#define        MH_INCLUDE_A        <##MH_INCFILE_A##.h>
#define        MH_INCLUDE_B        <##MH_INCFILE_B##.h>

/*   Include the files */

#include       MH_INCLUDE_A
#include       MH_INCLUDE_B   

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