Preprocessor fizzbuzz

preproc_fizzbuzz.c

// Requires -std=c99
#include <stdio.h>

#define divisible %
#define by 
#define to ; i <=
#define when(mod, msg)    \
  if((i mod) == 0)        \
  {                       \
    printf(#msg);         \
    *replaced = 1;        \
  }                       \


#define fizzbuzz(range)               \
  void rules(int, short *);           \
  int main(void) {                    \
    for(int i = range; ++i)           \
    {                                 \
      short replaced = 0;             \
      rules(i, &replaced);            \
      if(!replaced)                   \
        printf("%d", i);              \
      printf("\n");                   \
    }                                 \
  }                                   \
  void rules(int i, short *replaced)  \
  {

#define end }

fizzbuzz(1 to 100)
  when(divisible by 3, Fizz)
  when(divisible by 5, Buzz)
end