忽略不正确的用户输入，直到收到正确的输入

Question

我的代码有问题。我必须制作一个简单的选择游戏，并且我需要拥有它，这样如果用户输入了一个无效的选项，它就会暂停故事，直到他们选择了一个有效的响应。我试着在一段时间内包装整个东西（1==1）并在他的控制台窗口中输入无效的响应，它会无限打印出“这不是一个选项”。我该如何补救？谢谢。

         // First choice, scene 1 if-statements
        while (1 == 1)
        {
            String firstScene = Console.ReadLine();
            firstScene = firstScene.Trim();
            String firstChoice = firstScene.ToLower();
            Console.WriteLine();

            if (firstChoice == "rudely")
            {
                assholeFactor++;
                Console.WriteLine(">>\"You're damn right it was! We've been working on this for years. I thought you'd be happy that all those hours at the office actually amounted to something.\" (Douche factor increased)");
                break;
            }
            if (firstChoice == "nicely")
            {
                niceFactor++;
                Console.WriteLine(">>\"No, it wasn't silly. I can see where you're coming from. I suspect there will be a lot of people with those same type of questions upon the release of the first model.\" (Nice factor increased)");
                break;
            }
            if (firstChoice == "silence")
            {
                judgement--;
                Console.WriteLine(">>You sip your wine and say nothing. (Judgement decreased)");
                break;
            }
            if (firstChoice != "rudely" || firstChoice != "nicely" || firstChoice != "silence")
            {
                Console.WriteLine("That wasn't an option.");
                continue;
            }
        }

Answer 1

你可以这样做。基本上，您保留一个标志来控制循环。继续它，直到你得到正确的输入。一旦你得到正确的输入，通过设置标志来停止循环。

string firstChoice = "getInputFromUser....";
var isCorrectInput = false;

do
{
    if (firstChoice == "rudely")
    {
        isCorrectInput = true; //stop further loop iteration
        assholeFactor++;
        .....
    }
    else if 
        ... //set isCorrectInput as well
    else
    {
        //if input didn't match options, continue loop
        Console.WriteLine("That wasn't an option. Enter again...");
        firstChoice = Console.ReadneLine(); //
    }
} while(!isCorrectInput);

Answer 2

在检查它的条件之前，您必须将用户输入重新读取到循环中的变量内：

var input = ReadLine();
while (true) // or some other condition
{
    if (input=="...") { } ...

    input = ReadLine(); // again
}

另外，我在assholeFactor++loled

Answer 3

如果问题已正确回答，您可以使用标志来检查每个循环。像这样的：

var answered = false;
while(!answered) // Loop until the question has been correctly anwered
{
    var firstChoice = ReadLine();
    if (firstCoice == "rudely") 
    {
        assholeFactor++;
        Console.WriteLine(">>\"You're damn right it was! We've been working on this for years. I thought you'd be happy that all those hours at the office actually amounted to something.\" (Douche factor increased)");
        answered = true; // Question answered --> shouldn't keep asking
    }
    else if...
    else
    {
        Console.WriteLine("That wasn't an option.");
    }
}  

Answer 4

你可以这样做：

    Dictionary<string,Tuple<string,Action>> Choices = new Dictionary<string, Tuple<string, Action>>();
    int assholeFactor = 0;
    int niceFactor    = 0;
    int judgement     = 0;

    Choices.Add("rudely" , new Tuple<string, Action>("You're damn right it w.."          , () => assholeFactor++ ));
    Choices.Add("nicely" , new Tuple<string, Action>("No, it wasn't silly. I ca.."       , () => niceFactor++    )); 
    Choices.Add("silence", new Tuple<string, Action>("You sip your wine and say nothing.", () => judgement--     ));

    do
    {          
        string option = Console.ReadLine();
        if (Choices.ContainsKey(option))
        {
            Console.Out.WriteLine(Choices[option].Item1);
            Choices[option].Item2();                    
            break;
        }
        Console.WriteLine("That wasn't an option.");
    } while (true);