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C# 不可达的goto语句

c#

C# 不可达的goto语句,c#,C#,我正在用这个基于文本的游戏做这个测试，检查键和检查门转到开关不工作，它说是无法访问的代码 为什么会这样 action: Console.WriteLine("what do you want to do"); string actionAnswer = Console.ReadLine(); inspectSuroundings: Console.WriteLine("You see a small white room with a l

我正在用这个基于文本的游戏做这个测试，检查键和检查门转到开关不工作，它说是无法访问的代码 为什么会这样

action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }
您正在使用
转到操作在
InspectSurounds:
中，这使以下代码无法访问


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }



inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }



我建议您使用面向对象编程（OOP）的方法来编写这个程序，它不仅可以帮助您理解和调试程序，还可以开发一个干净、不易出错的程序
 问题在于你的逻辑！以下行是唯一执行的行


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }



action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;


在这一行之后，它将继续转到动作标签。因此，代码的另一部分将不会执行


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }



action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;


此外，建议不要在C#中使用goto和label。它们可以替换为条件操作
 对后藤说不

action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }




此代码块导致此错误


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }





action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }


它将只在这两个时间段之间进行迭代。它将到达第22行，然后返回第16行执行操作：标签


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }


注:
在继续之前阅读这些


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }





action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }





action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }


goto==编程错误


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }


重嵌套循环==更糟糕的编程


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }


不要使用goto。。。修正你的代码


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }



您应该在标签前写下条件。因此，您的程序看起来像


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }



action:
    Console.WriteLine("what do you want to do");
    string actionAnswer = Console.ReadLine();


    if((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
    {
        goto inspectSuroundings;
    }
    else if((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
    {
        goto inspectKey;
    }
    else if((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
    {
        goto inspectDoor;
    }
    else
    {
        Console.Beep();
        goto action;
    }

inspectSuroundings:
    Console.WriteLine("You see a small white room with a large two pronged key and a door.");
    goto action;

inspectKey:
    Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
    goto action;

inspectDoor:
    Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
    goto action;


但这并不是解决你遇到的问题的方法，你需要做一个循环，而不是去做。您可以阅读更多有关的信息，从而使您的程序


action:
        Console.WriteLine("what do you want to do");
        string actionAnswer = Console.ReadLine();

    inspectSuroundings:
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
        goto action;

    inspectKey:
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
        goto action;

    inspectDoor:
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
        goto action;

        if ((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
        {
            goto inspectSuroundings;
        }else if ((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
        {
            goto inspectKey;
        }else if ((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
        {
            goto inspectDoor;
        }else
        {
            Console.Beep();
            goto action;
        }



while(true)
{
    Console.WriteLine("what do you want to do");
    string actionAnswer = Console.ReadLine();
    if((actionAnswer == "look") || (actionAnswer == "inspect") || (actionAnswer == "lookAround"))
    {
        Console.WriteLine("You see a small white room with a large two pronged key and a door.");
    }
    else if((actionAnswer == "inspectKey") || (actionAnswer == "lookAtKey"))
    {
        Console.WriteLine("It seems to be a large gold key,with three prongs instead of two.");
    }
    else if((actionAnswer == "inspectDoor") || (actionAnswer == "lookAtDoor"))
    {
        Console.WriteLine("Its locked.There mus be a THREE PRONGED key around here.");
    }
    else
    {
        Console.Beep();
    }
}



不要使用
goto
。永远不要使用
goto
。我看到的是，你的代码就像一个循环
操作：Console.WriteLine（“你想做什么”）；字符串actionAnswer=Console.ReadLine（）；检查环境：Console.WriteLine（“你看到一个白色的小房间，有一把大的双刃钥匙和一扇门。”）；后藤行动@Prajwal goto有一些用法，因此该建议无效。但通常不需要。至于问题：逐行调试，您将看到。在这种情况下，不要使用goto并编写正确的代码，例如，使用switch/case时，没有条件忽略
got操作所以它总是将其重定向到label@SamiKuhmonen，我知道。但是对于这个级别的人来说，最好是建议反对。而且，
goto
使代码的可读性大大降低**我的意见