using System;

public class Program

{

    public static void Main()

    {

        int A=0;

        double B=0;

        string C="0";

        B=A;

        A = (int)B;

        A=Convert.ToInt32(C);

        Console.WriteLine("---------While loop---------");  

        int i=2;

        while(i<=5)

        {

        Console.WriteLine("Hello World x={0}",i);   

        i=i+2;  

        }

        Console.WriteLine("---------Do While loop---------");

        int y = 1,z = 2;

        do

        {

        Console.WriteLine("Hello World {0} x {1} = {2}",z,y,y*z);   

        y++;    

        }while(y<=12);

    }

}