C#系列教程——switch定义及使用

代码如下：

using System;
class Switch_Test
{
    static void Main()
    {
        Console.WriteLine("box sizes: 1=Small 5=Medium 10=Large");
        Console.Write("请选择: ");
        string s = Console.ReadLine();
        int n = int.Parse(s);
        int cost = 0;//初始化数据
        switch (n)
        {
            case 1:
                cost += 1;
                break;
            case 5:
                cost += 5;
                goto case 1;
            case 10:
                cost += 10;
                goto case 1;
            default:
                Console.WriteLine("无效的输入. 请选择1, 5, or 10.");
                break;
        }
        Console.WriteLine("Thank you ！你的花费＝{0}", cost);
    }
}