/* The following code example is taken from the book * "C++ Templates - The Complete Guide" * by David Vandevoorde and Nicolai M. Josuttis, Addison-Wesley, 2002 * * (C) Copyright David Vandevoorde and 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 "sqrt2.hpp"int main(){    std::cout << "Sqrt<16>::result = " << Sqrt<16>::result              << '\n';    std::cout << "Sqrt<25>::result = " << Sqrt<25>::result              << '\n';    std::cout << "Sqrt<42>::result = " << Sqrt<42>::result              << '\n';    std::cout << "Sqrt<1>::result =  " << Sqrt<1>::result              << '\n';}