switch case

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
           Console.Write("请输入数字0—6");
            int a = int.Parse(Console.ReadLine());
            switch (a)
            {
                case 0:
                    Console.WriteLine("星期天");
                    break;
                case 1:
                    Console.WriteLine("星期1");
                    break;
                case 2:
                    Console.WriteLine("星期2");
                    break;
                case 3:
                    Console.WriteLine("星期3");
                    break;
                case 4:
                    Console.WriteLine("星期4");
                    break;
                case 5:
                    Console.WriteLine("星期5");
                    break;
                case 6:
                    Console.WriteLine("星期6");
                    break;
                default:
                    Console.WriteLine("数字不正确");
                    break;


            }
            Console.ReadLine();
        }
    }
}