using System;

public class Program

{

    public static void Main()

    {

                Console.WriteLine("Enter a month name");

        string m=Console.ReadLine();

        switch(m)

        {

            case"January":

            case"February":

            case"March":Console.WriteLine("4th quarter");

            break;

            case"October":

            case"November":

            case"December":Console.WriteLine("3rd quarter");

            break;

            case"July":

            case"August":

            case"September":Console.WriteLine("2nd quarter");

            break;

            case"April":

            case"May":

            case"June":Console.WriteLine("1st quarter");

            break;

            default:

            Console.WriteLine("Error");

            break;

        }

​

    }

}