using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("This is For Loop");

        int num;

        for (num=10; num>=1; num=num-1)

        {

            Console.WriteLine(num);

        }

        Console.WriteLine("This is While Loop");

        int no=10;

        while(no>=1)

        {

            Console.WriteLine("10 9 8 7 6 5 4 3 2 1");

        no=no-1;

        }

        Console.WriteLine("This is Do While Loop");

        int nu=1;

        do

        {

            Console.WriteLine("10 9 8 7 6 5 4 3 2 1");

        nu++;

        }

        while(nu<=10);

    }

    }

​