#include <stdio.h>
#include <stdlib.h>
#define SECOND
int main(int argc, char *argv[])
{
    #ifdef FRIST
          printf("1\n");
    #elif define SECOND
          printf("2\n");
    #else
          printf("3\n");
    #endif                  

  
  system("PAUSE");   
  return 0;
}

谢谢。