Write a program in C# Sharp to read any Month Number in integer and display the number of days for this month

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
public   class exercise23
   {
       static void Main(string[] args)
     {
   int monno;

           Console.Write("\n\n");
           Console.Write("Read month number and display number of days for that month:\n");
           Console.Write("--------------------------------------------------------------");
           Console.Write("\n\n");

   Console.Write("Input Month No : ");
   monno = Convert.ToInt32(Console.ReadLine());
   switch(monno)
   {
	case 1:
	case 3:
	case 5:
	case 7:
	case 8:
	case 10:
	case 12:
	       Console.Write("Month  have 31 days. \n");
	       break;
	case 2:
	       Console.Write("The 2nd month is a February and have 28 days. \n");
	       Console.Write("in leap year The February month  Have 29 days.\n");
	       break;
	case 4:
	case 6:
	case 9:
	case 11:
	       Console.Write("Month have 30 days. \n");
	       break;
default:
	       Console.Write("invalid Month number.\nPlease try again ....\n");
	       break;
      }
  }
}