/*
  File: CalcSqrt.java
  
  Description: We want to calculate the square root of a number.

  Student Name: Samira Irani

  Student UT EID: SI654

  Course Name: CS 303E

  Unique Number: 56105

  Date Created: 10/06/2006

  Date Last Modified: 10/06/2006

*/


import java.util.Scanner;
public class CalcSqrt
{
    public static void main (String[] args)
    {
        Scanner sc = new Scanner (System.in);
        double N = sc.nextDouble();
        System.out.print ("Enter a positive number: ");
        while (N < 0) 
        {
            System.out.println ("Error! I said a positive number. Jeez. Try again.");
        }
        double oldGuess = N
        while (Math.abs(oldGuess - newGuess) > Math.pow(10.0,-06)) 
        {
            newGuess = ((N / oldGuess) + oldGuess / 2.0);
        }
        
    }
}