Question

我是C＃的新手，我正在编写一个简单的Rock，Paper Scissors游戏，但是我的“switch”命令有问题。我希望用户输入Rock，Paper或Scissors，然后输入输入并转到特定情况，但我无法弄清楚如何操作。

    {
        //random number generator
            Random random = new Random();
            int randomNumber = random.Next(1,4);

        //user input
            Console.WriteLine("PLease Enter Rock, Paper or Scissors");
            string input = Console.ReadLine();

        //compare input and random number
        switch (input)
        {
            case Rock:
                if (randomNumber == 1)
                {
                    Console.WriteLine("It's a draw, computer also chose Rock");
                }
                else if (randomNumber == 2)
                {
                    Console.WriteLine("You loose, computer chose Paper");
                }
                else if (randomNumber == 3)
                {
                    Console.WriteLine("You win, computer chose Scissors");
                }
                break;

            case Paper:
                if (randomNumber == 1)
                {
                    Console.WriteLine("You win, computer chose Rock");
                }
                else if (randomNumber == 2)
                {
                    Console.WriteLine("It's a draw, computer also chose Paper");
                }
                else if (randomNumber == 3)
                {
                    Console.WriteLine("You loose, computer chose Scissors");

                }
                break;

            case Scissors:
                if (randomNumber == 1)
                {
                    Console.WriteLine("You loose, computer chose Rock");
                }
                else if (randomNumber == 2)
                {
                    Console.WriteLine("You win, computer chose Paper");
                }
                else if (randomNumber == 3)
                {
                    Console.WriteLine("It's a draw, computer chose Scissors");

                }
                break;
        }

Answer 1

案例必须写成字符串文字（引号）：

switch (input)
{
    case "Rock":
        // ...
        break;

    case "Paper":
        // ...
        break;

    case "Scissors":
        // ...
        break;
}

或者，定义一些包含这些值的变量，例如

string Rock = "Rock";

Answer 2

您必须将案例写为字符串：

...
case "Rock":
...

C＃中的switch命令无法正常工作

2 个答案: