/* The following code example is taken from the book * "The C++ Standard Library - A Tutorial and Reference" * by Nicolai M. Josuttis, Addison-Wesley, 1999 * * (C) Copyright Nicolai M. Josuttis 1999. * 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 <sstream>template <class charT, class traits>inlinestd::basic_ostream<charT,traits>&operator << (std::basic_ostream<charT,traits>& strm,             const Fraction& f){    /* string stream     * - with same format     * - without special field width     */    std::basic_ostringstream<charT,traits> s;    s.copyfmt(strm);    s.width(0);    // fill string stream    s << f.numerator() << '/' << f.denominator();    // print string stream    strm << s.str();    return strm;}