Question

所以我想做一个投注游戏。玩家必须输入0到100之间的数字，并且它不能更高或更低。这就是我到目前为止所做的。

int Player_Money = 100;
int Computer_Money = 100;



int Check(int &b) { //b here would be Player_Money
    int Player_Bet = 0;
    bool Exit_Loop = false;

    cout << "Please Enter A Number Between 0 and " << b;

    while (!Exit_Loop) {
        cin >> Player_Bet;
        if (Player_Bet <= 0) {
            cout << "The Amount That You Have Entered Is To Low.\n";
        }

        else if (Player_Bet > b) {
            cout << "The Amount That You Have Entered Is Too High.\n";
        }

        if (Player_Bet > 0) {
            if (Player_Bet < b) {
                Exit_Loop = true;
                if (Player_Bet = b) {
                    cout << "You Have Gone All In!\n";
                    Exit_Loop = true;
                }
            }

        }
        return Player_Bet;
    }
}

当我尝试做Check（变量）;这就是发生的事情。

如果它变低，它会说它为低，并退出循环。如果它很高，它会说你输入的数字很高。然后退出。如果它在范围内，它表示你全押，返回100，然后退出。

我想知道的是：

*如何正确地进行循环循环以及如何使函数返回正确的数字。

Answer 1

如果它在范围内，它表示你全押，返回100，然后退出

if（Player_Bet = b）改变if（Player_Bet == b）因为=将b设置为Player_Bet而==是比较值。

如果您不希望它在具有范围内值之前退出，请移动返回Player_Bet;在while循环中

Answer 2

首先检查Player_bet是否高于0且低于b。检查之后是否等于b。

int Player_Money = 100;
int Computer_Money = 100;

int Check(int &b) { //b here would be Player_Money
    int Player_Bet = 0;
    bool Exit_Loop = false;

    cout << "Please Enter A Number Between 0 and " << b;

    while (!Exit_Loop) {
        cin >> Player_Bet;
        if (Player_Bet <= 0) {
            cout << "The Amount That You Have Entered Is To Low.\n";
        }
        else if (Player_Bet > b) {
            cout << "The Amount That You Have Entered Is Too High.\n";
        }
        else if (Player_Bet > 0 && Player_Bet < b ) {
            Exit_Loop = true;
        }
        else /* if (Player_Bet == b) */ {
            cout << "You Have Gone All In!\n";
            Exit_Loop = true;
        }       
    }
    return Player_Bet;
}

Answer 3

我在您发布的代码段中看到的一个主要问题是，您的return内的while loop声明。所以无论Player_Bet的值是什么，总是会在第一次迭代结束时返回并结束方法....换句话说，如果永远不会实际循环。

Answer 4

您的代码中存在以下几个问题：

您正在使用=进行比较，您应该使用==
你正在进行多余的比较。
您的退出循环没有任何意义，因为您将永远返回。

这将更适合你。但请注意，做某事（真实）通常不是一个好主意。

while (true) {
   cin >> Player_Bet;
   if (Player_Bet <= 0) {
       cout << "The Amount That You Have Entered Is To Low.\n";
   } else if (Player_Bet > b) {
       cout << "The Amount That You Have Entered Is Too High.\n";
   } else {
       if (Player_Bet == b) {
           cout << "You Have Gone All In!\n";
       }
       return Player_Bet;
   }
}

C ++函数循环和if语句不起作用

4 个答案: