While循环不工作

本文关键字：工作 循环 While | 更新日期: 2023-09-27 18:04:22

有人能找到为什么这个循环不工作吗?我是c#新手。

while (move == "r" || move == "s" || move == "f")
            {
                Console.Write("'nEnter your move: ");
                move = Console.ReadLine();

                switch (move)
                {
                    case "r":
                        Console.Write("'nYou have reloaded, press enter for Genius");
                        Console.ReadLine();
                        break;
                    case "s":
                        Console.Write("'nYou have shielded, press enter for Genius");
                        Console.ReadLine();
                        break;
                    case "f":
                        Console.Write("'nYou have fired, press enter for Genius");
                        Console.ReadLine();
                        break;
                    default:
                        Console.Write("'nInvalid move, try again'n'n");
                        break;
                }

            }

While循环不工作

可能是因为move是在循环内初始化的，并且可能是null或空字符串，因为在循环之前我看不到代码，所以我假设它没有初始化。

我的建议是使用布尔标志，设置为

bool done = false;
while (!done)
{
    // do work
    if (move == finalMove) // or whatever your finish condition is
        done = true; // you could also put this as a case inside your switch
}

耶稣是对的，建议你接受他的回答。下面是重写代码的方法。

do
            {
                Console.Write("'nEnter your move: ");
                move = Console.ReadLine();

                switch (move)
                {
                    case "r":
                        Console.Write("'nYou have reloaded, press enter for Genius");
                        Console.ReadLine();
                        break;
                    case "s":
                        Console.Write("'nYou have shielded, press enter for Genius");
                        Console.ReadLine();
                        break;
                    case "f":
                        Console.Write("'nYou have fired, press enter for Genius");
                        Console.ReadLine();
                        break;
                    default:
                        Console.Write("'nInvalid move, try again'n'n");
                        break;
                }

            }
 while (move == "r" || move == "s" || move == "f");
但是，请注意，如果您得到的不是"r"，"s"或"f"，则将打印Invalid move, try again，然后退出循环(它们不能再尝试)。相反，您可能需要分配一个键(可能是"q"表示quit)来终止循环并将while条件更改为类似 的内容
while (move != "q");
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