Question

我想创建序列号，当用户输入“0”时，它应该停止并将数字保存在内存中，然后询问用户是否显示这些数字的总数或显示平均值。总看起来不错，但是当我选择平均值时，我的控制台没有响应，它崩溃了。

using System;

class ETA11
{
    public static int Main()
    {
        ETA11_3();
        return 0;
    }
    public static void ETA11_3()
    {
        int number = 0, total = 0, option = 0, counter = 0, average = 0;
        do
        {
            Console.WriteLine("Input a number (zero for stop): ");
            number = Int16.Parse(Console.ReadLine());
            total += number;

            if (number == 0) break;
        } while (option != 2);
        Console.WriteLine("Choose an option: ");
        Console.WriteLine("1 - Total");
        Console.WriteLine("2 - Average");
        counter++;
        option = Int16.Parse(Console.ReadLine());
        switch (option)

        {
            case 1:
                Console.WriteLine("Total: {0}", total);
                break;
            case 2:
                Console.WriteLine("Total: {0}", total / number);
                break;
            default:
                Console.WriteLine("Invalid Option");
                break;
        }
    }
}

Answer 1

当您选择选项2时，您正在划分0

Console.WriteLine("Total: {0}", total / number);

我相信你想要除以counter

Console.WriteLine("Total: {0}", total / (decimal) counter);

但是，你需要将counter++放在你的whileloop中

Answer 2

正如Neverever所提到的，你用数字除以0导致DividedByZeroException。我还将正确的计数器合并到你的循环中并清理了你的do {} while（）循环（使用不当）。

以下是更正的方法：

public static void ETA11_3()
{
    int number = 0, total = 0, option = 0;
    double counter = 0d;
    while (true)
    {
        Console.WriteLine("Input a number (zero for stop): ");
        number = Int16.Parse(Console.ReadLine());
        total += number;

        if (number == 0) break;
        counter++;
    }
    Console.WriteLine("Choose an option: ");
    Console.WriteLine("1 - Total");
    Console.WriteLine("2 - Average");
    option = Int16.Parse(Console.ReadLine());
    switch (option)
    {
        case 1:
            Console.WriteLine("Total: {0}", total);
            break;
        case 2:
            Console.WriteLine("Total: {0}", total / counter);
            break;
        default:
            Console.WriteLine("Invalid Option");
            break;
    }
}

计算c＃中序列号的平均值

2 个答案: