library info ( small program )

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace libraryInfo

{

    class Program

    {

       static void Main(string[] args)

       {

           int choice;

           swat:

           Console.WriteLine("1.Computer Books");

           Console.WriteLine("2.Mathmetical Books");

           Console.WriteLine("3.History Books");

           Console.WriteLine("4.English");

           choice = Int32.Parse(Console.ReadLine());

          

           switch (choice)

           {

               case 1:

                   Console.WriteLine("1.Introducing Windows Server 2012");

                   Console.WriteLine("2.Let Us C");

                   Console.WriteLine("3.Database Fundamentals");

                   Console.WriteLine("4.C# in Depth ");

                   break;

               case 2:

                   Console.WriteLine("1.Abstract Algebra");

                   Console.WriteLine("2.Complex Analysis");

                   Console.WriteLine("3.Applied Mathematics");

                   Console.WriteLine("4.Calculus");

                  

                   break;

               case 3:

                   Console.WriteLine("1.The Origin of Species ");

                   Console.WriteLine("2.The Koran ");

                   Console.WriteLine("3.The Communist Manifesto ");

                   Console.WriteLine("4.The Republic ");

                   Console.WriteLine("5.The Complete Works ");

                   break;

               case 4:

                   Console.WriteLine("1.An Enchanted Evening");

                   Console.WriteLine("2.Battle of Midway");

                   Console.WriteLine("3.Endangered Species");

                   Console.WriteLine("4.Part of their World");

                   break;

               default:

                   Console.WriteLine("Try again");

                   goto swat;   

                   break;

           

           

           

           }

       }

    }

}