c - C 新手，类似二十一点的程序的错误消息问题

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所以我在类里面编写一个类似于二十一点的程序，但出现以下错误:

ThirtyNine.c:27:54: error: expected expression before 'int'
                 (playerdie1,playerdie2,playerdie3) = int initial3roll();
                                                      ^
ThirtyNine.c:28:60: error: expected expression before 'int'
                 (opponentdie1,opponentdie2,opponentdie3) = int initial3roll();
                                                            ^
ThirtyNine.c:29:60: error: expected ')' before string constant
                     printf("You roll 3 dice: ", playerdie1 " ", playerdie2, " ", playerdie3);
                                                            ^
ThirtyNine.c:29:60: warning: too many arguments for format [-Wformat-extra-args]
ThirtyNine.c:30:69: error: expected ')' before string constant
                     printf("Opponent rolls 3 dice: ", (opponentdie1 " ", opponentdie2, " ", opponentdie3);
                                                                     ^
ThirtyNine.c:30:106: error: expected ')' before ';' token
                     printf("Opponent rolls 3 dice: ", (opponentdie1 " ", opponentdie2, " ", opponentdie3);
                                                                                                          ^
ThirtyNine.c:92:37: warning: too many arguments for format [-Wformat-extra-args]
                                     }
                                     ^
ThirtyNine.c:92:37: error: expected ';' before '}' token

这是我到目前为止的代码，任何帮助将不胜感激!

int initial3roll();
int main(){
    int playerdie1,playerdie2,playerdie3;
    int opponentdie1,opponentdie2,opponentdie3;
    int playertotal;
    int opponenttotal;
    int select1;
    int diceroll;
        printf("Welcome to the game of 39!\n Press 1 to start or 0 to exit:");
        scanf( "%d", &select1 );

    if ( select1 == 0) {
        exit(0);
}
else {
    int initial3roll();{
    int die1 = 1 + (rand() % 12);
    int die2 = 1 + (rand() % 12);
    int die3 = 1 + (rand() % 12);
    return (die1,die2,die3);
      }
        while (select1 == 1){
            (playerdie1,playerdie2,playerdie3) = int initial3roll();
            (opponentdie1,opponentdie2,opponentdie3) = int initial3roll();
                printf("You roll 3 dice: ", playerdie1 " ", playerdie2, " ", playerdie3);
                printf("Opponent rolls 3 dice: ", (opponentdie1 " ", opponentdie2, " ", opponentdie3);
                    playertotal = playerdie1 + playerdie2 + playerdie3;
                    opponenttotal = opponentdie1 + opponentdie2 + opponentdie3;
                        printf("Your total: ", playertotal);
                        printf("Opponent total: ", opponenttotal);
                        printf("How many dice do you want to roll again: ");
                        scanf("&d", &diceroll );
                    switch(diceroll){
                        case '1' int die1 = 1 + (rand() % 12);
                            printf("You roll 1 die: ", die1);
                            playertotal += die1;
                            die1 = 1 + (rand() % 12);
                            printf("Opponent rolls 1 die: ", die1);
                            opponenttotal += die1;
                            printf("Your total is: ", playertotal);
                            printf("Opponent total is: ", opponenttotal);
                                break;
                        case '2'
                        int die1 = 1 + (rand() % 12);
                        int die2 = 1 + (rand() % 12);
                            printf("You roll 2 die: ", die1, die2);
                            playertotal += die1 + die2;
                            die1 = 1 + (rand() % 12);
                            die2 = 1 + (rand() % 12);
                            printf("Opponent rolls 2 die: " die1, die2);
                            opponenttotal += die1 + die2;
                            printf("Your total is: ", playertotal);
                            printf("Opponent total is: ", opponenttotal);
                                break;
                        case '3'
                        int die1 = 1 + (rand() % 12);
                        int die2 = 1 + (rand() % 12);
                        int die3 = 1 + (rand() % 12);
                            printf("You roll 3 die: ", die1, die2,die3);
                            playertotal += die1 + die2 + die3;
                            die1 = 1 + (rand() % 12);
                            die2 = 1 + (rand() % 12);
                            die3 = 1 + (rand() % 12);
                            printf("Opponent rolls 3 die: " die1, die2, die3);
                            opponenttotal += die1 + die2 + die3;
                            printf("Your total is: ", playertotal);
                            printf("Opponent total is: ", opponenttotal);
                                break;
                        default:
                            printf("Your total is: ", playertotal);
                            printf("Opponent total is: ", opponenttotal);
                                break;
                    }
                        if (playertotal > opponenttotal);
                            printf("You Win!");
                        if (opponenttotal > playertotal);
                            printf("You Lose");
                        if (opponenttotal = playertotal);
                            printf("You Tie");


                        printf("Press 1 to play again or 0 to exit:");
                        scanf( "%d", &select1 );
                        if (select1 == 0){
                            printf("Thanks for playing!");
                                exit(0);
                        }
                                }

}
                        return(0);

}

Answer 1

一些突出的事情:

1) 了解如何使用 printf -- 如果您是 C 语言新手，情况会非常不同。您可以将单个字符串作为第一个参数，将参数列表作为其余参数，然后使用 % 后跟类型标识符来表示字符串中的参数。例如: %d 表示 int，因此:

printf("You roll 3 dice: %d %d %d", playerdie1, playerdie2, playerdie3);

2) C没有嵌套函数；您需要将 intinitial3roll() 的定义单独移到 main 之外。它应该类似于您对 main 的定义。

3) C 没有元组，所以这不起作用:

(playerdie1,playerdie2,playerdie3) = int initial3roll();

除非您想使用指针或传入引用参数，否则您必须从 initial3roll 返回单个 int。您可能需要考虑只运行此函数 3 次，每次滚动一次，以简化操作。或者干脆将其完全删除并单独使用 rand。

4) 每个case 都需要在数字后加一个冒号，并且可能应该独占一行(为了清楚起见)。 default 大小写是正确的。

5)让事情变得更容易，并正确缩进你的代码。您的编辑可能可以为您做这件事；到处搜索如何。这样很难跟得上。