gistfile1.txt

#include <stdio.h>

typedef enum { GU = 1, CHOKI = 2, PA = 3 } HAND;
void judge(HAND handA, HAND handB);
 
int
main(void) {
  judge(GU, GU);
  judge(GU, CHOKI);
  judge(GU, PA);
  puts("");

  judge(CHOKI, GU);
  judge(CHOKI, CHOKI);
  judge(CHOKI, PA);
  puts("");

  judge(PA, GU);
  judge(PA, CHOKI);
  judge(PA, PA);
}
 
void
judge(HAND myhand, HAND yourhand) {
  switch ((myhand - yourhand + 3) % 3) {
  case 0: printf("あいこだよん\n"); break;
  case 1: printf("あなたの負け\n"); break;
  case 2: printf("あなたの勝ち\n"); break;
  default:
    // http://t2.gstatic.com/images?q=tbn:l-fSJIgOZLWoeM:http://blog-imgs-31-origin.fc2.com/s/m/o/smokie/luck.jpg
  }
}