using System;

public class Program

{

    public static void Main()

    {

        start: 

        Console.WriteLine("Please Enter a Number");

        double input = double.Parse(Console.ReadLine()); 

    if (input < 0) { 

        Console.WriteLine("You did not enter a positive number!");

        goto start; 

    } 

    else { 

        int i = 1;

        double decf;

        string decfinal;

        while(i <= input){ 

            decf = Math.Sqrt(i); 

            decfinal = decf.ToString("0.###"); 

            Console.Write("The square root of {0} is {1}.", i, decfinal);

            Console.WriteLine();

            i++;    

            }

    }

  }

}