Question

当我运行此代码时，输入我的输入，由于某种原因我没有收到任何类型的输出。

这是我的代码：

string fruit = Console.ReadLine();
double quantity = double.Parse(Console.ReadLine());
string day = Console.ReadLine();

if (day == "Monday" || day == "Tuesday"|| day == "Wednesday" || day ==     "Thursday" || day == "Friday")
{
    switch (fruit)
    {
        case "banana": Console.WriteLine(Math.Round(2.50*quantity,2)); break;
        case "apple": Console.WriteLine(Math.Round(1.20 * quantity, 2)); break;
        case "orange": Console.WriteLine(Math.Round(0.85 * quantity, 2)); break;
        case "grapefruit" : Console.WriteLine(Math.Round(1.45 * quantity, 2)); break;
        case "kiwi": Console.WriteLine(Math.Round(2.70 * quantity, 2)); break;
        case "pineapple": Console.WriteLine(Math.Round(5.50 * quantity, 2)); break;
        case "grapes": Console.WriteLine(Math.Round(3.85* quantity, 2)); break;
        default: Console.WriteLine("error"); break;
    }
}
else if (day == "Saturday" || day == "Sunday")
{
    switch (fruit)
   {
        case "banana": Console.WriteLine(Math.Round(2.70 * quantity, 2)); break;
        case "apple": Console.WriteLine(Math.Round(1.25 * quantity, 2)); break;
        case "orange": Console.WriteLine(Math.Round(0.90 * quantity, 2)); break;
        case "grapefruit": Console.WriteLine(Math.Round(1.60 * quantity, 2)); break;
        case "kiwi": Console.WriteLine(Math.Round(3.00 * quantity, 2)); break;
        case "pineapple": Console.WriteLine(Math.Round(5.60 * quantity, 2)); break;
        case "grapes": Console.WriteLine(Math.Round(4.20 * quantity, 2)); break;
        default: Console.WriteLine("error"); break;
    }
}

如果你们中的任何人能帮助我，我将非常感激。

Answer 1

您正在获得输出 - 只是应用程序完成得太快，您无法看到它。只需在方法的最后添加以下行，即可在退出前使应用程序暂停输入：

Console.ReadLine();

Answer 2

你也可以使用 Console.ReadKey（）;

如果您在Visual Studio中运行没有调试的程序，请按 Ctrl + F5 ，因此它将在结束时停止，并且在您点击任何控制台后将关闭控制台键。

C＃为什么我不从控制台收到任何输出？

2 个答案: