Switch Case Demo - C# Program

using System;
namespace SwitchCaseApp
{
    class Program
    {
        static void Main(string[] args)   
        {
            int month;
            Console.Write("Enter the Month Number :");
            month = Convert.ToInt32(Console.ReadLine());
            switch(month)
            {
                case 1:
                case 3:
                case 5:
                case 7:
                case 8:
                case 10:
                case 12:
                    Console.WriteLine("31 Days Month");
                    break;
                case 2:
                    Console.WriteLine("28 or 29 Days Month");
                    break;
                case 4:
                case 6:
                case 9:
                case 11:
                    Console.WriteLine("30 Days Month");
                    break;
                default:
                    Console.WriteLine("invalid month number");
                    break;
           }
        }
    }
}