Examples of conditional compilation directives

The following example shows how you can nest preprocessor conditional compilation directives:

#if defined(TARGET1)
#   define SIZEOF_INT 16
#   ifdef PHASE2
#      define MAX_PHASE 2
#   else
#      define MAX_PHASE 8
#   endif
#elif defined(TARGET2)
#   define SIZEOF_INT 32
#   define MAX_PHASE 16
#else
#   define SIZEOF_INT 32
#   define MAX_PHASE 32
#endif

The following program contains preprocessor conditional compilation directives:

/**
 ** This example contains preprocessor
 ** conditional compilation directives.
 **/

#include <stdio.h>

int main(void)
{
   static int array[ ] = { 1, 2, 3, 4, 5 };
   int i;

   for (i = 0; i <= 4; i++)
   {
      array[i] *= 2;

#if TEST >= 1
   printf("i = %d\n", i);
   printf("array[i] = %d\n",
   array[i]);
#endif

   }
   return(0);
}