Question

标题含糊不清，但我希望我的代码和问题会有所帮助。本质上，我希望显示我的词典 questionDict 的一个键，如果给出了某个用户输入（在这种情况下，＆＃39;是＆＃39;）那么我希望它显示下一个键。我可以理解问题所在，只是我无法解决问题。如果我听起来很业余，请提前道歉，但那是因为我。

namespace ELIZA
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, string> questionDict = //creating dictionary for questions and animals
                new Dictionary<string, string>();
            questionDict.Add("Does it have whiskers?", "cat");
            questionDict.Add("Does it purr?", "cat");
            questionDict.Add("Does it bark?", "dog");
            foreach (string test in questionDict.Keys)
            {
                Console.WriteLine("{0}", test);
                string userInput = Console.ReadLine();
                if (userInput == "yes")
                {
                    Console.WriteLine("{0}", test);
                    Console.ReadLine();
                }
                else
                {
                    Console.WriteLine("AW NAW");
                    Console.ReadLine();
                }
            }
        }
    }
}

编辑：问题是（控制台成绩单）

它有胡须吗？

是

它有胡须吗？

是

它是否发出声音？

是

它是否发出声音？

是

等

Answer 1

在if块中，您再次显示test。因此你的输出将是：

> Does it have whiskers?
> yes
> Does it have whiskers?

如果你想要＆＃34; cat＆＃34;作为输出，您需要索引到字典：

if (userInput == "yes")
{
   Console.WriteLine("{0}", questionDict[test]); //Go get the value!
   Console.ReadLine();
}

哪会导致：

> Does it have whiskers?
> yes
> cat

Answer 2

您应该考虑切换到使用KeyValuePair而不是仅使用string。

namespace ELIZA
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, string> questionDict = //creating dictionary for questions and animals
                new Dictionary<string, string>();
            List<string> removeKeys = new List<string>();
            questionDict.Add("Does it have whiskers?", "cat");
            questionDict.Add("Does it purr?", "cat");
            questionDict.Add("Does it bark?", "dog");
            foreach (KeyValuePair<string, string> kvp in questionDict)
            {
                Console.WriteLine("{0}", kvp.Key);
                string userInput = Console.ReadLine();
                if (userInput == "yes")
                {
                    Console.WriteLine("{0}", kvp.Value);
                }
                else
                {
                    removeKeys.Add(kvp.Key);
                }
            }

            foreach(string rKey in removeKeys)
            {
                questionDict.Remove(rKey);
            }
        }
    }
}

Answer 3

我仍然不确定你要做什么，但是你的问题表明你在继续之前会得到重复的打印件。所以要具体回答你的问题（但我怀疑你问的更多......）

您的密码：

foreach (string test in questionDict.Keys)
{
    Console.WriteLine("{0}", test);
    string userInput = Console.ReadLine();
    if (userInput == "yes")
    {
        Console.WriteLine("{0}", test);
        Console.ReadLine();
    }
    else
    {
        Console.WriteLine("AW NAW");
        Console.ReadLine();
    }
}

如您所见，您打印密钥，要求输入，然后再次打印密钥并再次请求输入。你应该改为：

foreach (string test in questionDict.Keys)
{
    Console.WriteLine("{0}", test);
    string userInput = Console.ReadLine();
    if (userInput == "yes")
    {
        // do what you want, store the response, etc
    }
    else
    {
        Console.WriteLine("AW NAW");
    }
}

Answer 4

你可以这样：

namespace ELIZA
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, string> questionDict = //creating dictionary for questions and animals
                new Dictionary<string, string>();
            questionDict.Add("Does it have whiskers?", "cat");
            questionDict.Add("Does it purr?", "cat");
            questionDict.Add("Does it bark?", "dog");
            String lastAnswer="";
            bool isFirstQuestion=true;

            foreach (string test in questionDict.Keys)
            {
                if(isFirstQuestion)
                {
                    Console.WriteLine("{0}", test);
                    Console.ReadLine();
                    isFirstQuestion=false;
                }
                else
                {
                    if (lastAnswer == "yes")
                    {
                        Console.WriteLine("{0}", test);
                        Console.ReadLine();
                    }
                    else
                    {
                        Console.WriteLine("AW NAW");
                        Console.ReadLine();
                    }
                }
                lastAnswer = Console.ReadLine();


            }
        }
    }
}

用户输入后显示字典的键？

4 个答案: