int n;
char *te[] = { "ぐー","ちょき","ぱー"};
printf("ぐー...0 ちょき...1 ぱー...2\n");
scanf("%d",&n);
printf("あなた : %s\n",te[n]);
printf("CPU: %s\n",te[n == 0 ? 2 : n-1]);
printf("あなたのまけです。");