/* Filename:  root.cpp

   Author:  Br. David Carlson
            Br. Isidore Minerd

   Date:  January 5, 2000

   Modified:  June 26, 2000; August 17, 2001; July 16, 2009

   This program prompts the user to enter a positive real number and then
   prints its square root.

   Tested with:
      Microsoft Visual Studio 2005
      Microsoft Visual Studio 2008
      g++ under Linux
*/

#include <iostream>
#include <cmath>    // Needed in order to use sqrt function.
using namespace std;


int main(void)
   {
   double Num;

   cout << "Enter a positive real number: ";
   cin >> Num;
   cout << endl << "This number has square root: " << sqrt(Num)
      << endl << endl;

   return 0;
   }