Introduction
I have used Visual Studio 2012 for debugging purpose. But you can use any version of visul studio as per your availability..
using System; public class csharpExercise { static void Main(string[] args) { int monthnumber; //Reading a month number from user Console.WriteLine("Enter month number(1-12): "); monthnumber = Convert.ToInt32(Console.ReadLine()); switch (monthnumber) { case 1: Console.WriteLine("31 days"); break; case 2: Console.WriteLine("28 or 29 days"); break; case 3: Console.WriteLine("31 days"); break; case 4: Console.WriteLine("30 days"); break; case 5: Console.WriteLine("31 days"); break; case 6: Console.WriteLine("30 days"); break; case 7: Console.WriteLine("31 days"); break; case 8: Console.WriteLine("31 days"); break; case 9: Console.WriteLine("30 days"); break; case 10: Console.WriteLine("31 days"); break; case 11: Console.WriteLine("30 days"); break; case 12: Console.WriteLine("31 days"); break; default: Console.WriteLine("Invalid input!!! enter month number between 1-12"); break; } Console.ReadLine(); } }