>>636
int get_hand_player(void){
    int player;
    do{
        printf("じゃんけんぽん(1-3): ");
        scanf("%d", &player);
    }while(player<1 || 3<player);
    return player;
}
void print_hand(int hand){
    char *hand_str[]={"dummy", "グー", "チョキ", "パー"};
    puts(hand_str[hand]);
}
int judge(int computer, int player){
    switch((computer-player+3)%3){
        case 0: return 0; break;
        case 1: return 1; break;
    }
    return -1;
}