using System;

public class Program

{

    // Lecture 18: Switch Statements

    public static void Main()

    {

        Console.WriteLine("Enter year:");

        int year = int.Parse(Console.ReadLine());

        if (year ==1)

            {

                Console.WriteLine("Freshman");  

            }

            else if (year == 2)

            {

                Console.WriteLine("Sophomore");

            }

            else if (year ==3)

            {

                Console.WriteLine("Junior");

            }

            else if (year ==4)

            {

                Console.WriteLine("Senior");

            }

            else

            {

                Console.WriteLine("Invalid year.");

            }

        switch (year)

        {

            case 1:

            {

                Console.WriteLine("Freshman");  

                break;

            }

            case 2:

            {

                Console.WriteLine("Sophomore");

                break;

            }

            case 3:

            {

                Console.WriteLine("Junior");

                break;

            }

            case 4:

            {

                Console.WriteLine("Senior");

                break;

            }

            default:

            {

                Console.WriteLine("Invalid year.");

                break;

            }

        }

        /*

        N.B. C# does not support falling through a block of statements! I.e. the break statement is compulsory. But if there is no block one may write, e.g. :

        case 1:

        case 2:

        case 3:

        Console.WriteLine("Junior");

        break;

        */

    }

}