/* The following code example is taken from the book
 * "Object-Oriented Programming in C++"
 * by Nicolai M. Josuttis, Wiley, 2002
 *
 * (C) Copyright Nicolai M. Josuttis 2002.
 * Permission to copy, use, modify, sell and distribute this software
 * is granted provided this copyright notice appears in all copies.
 * This software is provided "as is" without express or implied
 * warranty, and with no claim as to its suitability for any purpose.
 */
#include <iostream>
#include <cmath>
#include "frac.hpp"

int main()
{
    CPPBook::Fraction x(1,4);
    //...
    std::cout << std::sqrt(x.toDouble())  // output root of x as a double
              << std::endl;
}
