using System;

public class Program

{

    public static void Main()

    {

        double number = 1, numberq = 1;

        string kwadrati;

        do

        {

            Console.Clear();

            numberq = Math.Sqrt(number);

            Console.WriteLine("{0} = {1:.###}  ({2})",number,numberq,numberq);

            Console.Write("Write number: ");

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

        }while(number != 0);

        Console.WriteLine("Thanks for using a program.");

    }

}