using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        int j=0;

        do {

            Console.WriteLine(j++);

        }

        while(j<10);

        int i=5;

        while(i>0)

        {

            Console.WriteLine(i);

            i--;

        }

        int[] a = { 1, 2, 3 };

foreach (int n in a)

{

  System.Console.Write(n); // "123"

}

        for (int m = 0; m < 10; m++) {

  if (m == 5) break; // end loop

  if (m == 3) continue; // start next iteration

  System.Console.Write(m); // "0124"

}

    }

}