/* 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>inlinestd::istream& operator >> (std::istream& strm, Fraction& f){    int n, d;    strm >> n;      // read value of the numerator    strm.ignore();  // skip '/'    strm >> d;      // read value of the denominator    f = Fraction(n,d);  // assign the whole fraction    return strm;}