1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace ConsoleApp1
 8 {
 9     class Program
10     {
11         static void Main(string[] args)
12         {
13             string Day = "";
14             Console.Write("请输入星期数：");
15             Day = Console.ReadLine();
16             switch (Day)
17             {
18                 case "一":
19                 case "二":
20                 case "三":
21                     Console.WriteLine("干煸扁豆6元.");
22                     break;
23                 case "四":
24                 case "五":
25                     Console.WriteLine("蒜茸油麦菜 4元.");
26                     break;
27                 case "六":
28                 case "日":
29                     Console.WriteLine("口水鸡 8元.");
30                     break;
31                 default:
32                     Console.WriteLine("您输入的星期数不正确");
33                     break;
34             }
35             Console.ReadKey();
36         }
37     }
38 }