using System;

​

namespace LoopingConstruct

{

    public class Program

    {

        public static void Main()

        {

            OriginalProgram.Start();

            //VersionFor.Start();

            VersionWhile.Start();

            //VersionDoWhile.Start();

        }

    }

​

    class OriginalProgram

    {

        public static void Start()

        {

                int g1;

        int g2;

        int g3;

        int g4;

        int g5;

        double avg1;

        double avg2;

​

        Console.WriteLine("Enter 5 grades separated by new line");

        g1 = Convert.ToInt32(Console.ReadLine());

        g2 = Convert.ToInt32(Console.ReadLine());

        g3 = Convert.ToInt32(Console.ReadLine());

        g4 = Convert.ToInt32(Console.ReadLine());

        g5 = Convert.ToInt32(Console.ReadLine());

        avg1 = g1 + g2 + g3 + g4 + g5;

        avg2 = avg1/5; 

        Console.WriteLine("The average is " + avg2 + " and round off to " + Math.Round(avg2));

        Console.Write("\nPress any key to exit... ");

        }

    }

​

    /*class VersionFor

    {

        public static void Start()

        { 

            for (int i = 0; i <= 5; i++)

        {

            Console.WriteLine(i);

        }

        }

    }*/

​

    class VersionWhile

    {

        public static void Start()

        {

            int i = 0;

            while (i < 5)

            {

            Console.WriteLine(i);

            i++;

            }

        }

    }

​

    /*class VersionDoWhile

    {

        public static void Start()

        {

            int i = 0;

​

do

   {

     Console.WriteLine(i);

     i++;

​

    }    

            while (i < 6);

            Console.WriteLine();

        }

    }*/

}