## Advanced Topic 17.3 (cont.)

>     istream& operator>>(istream& in, Fraction& r)
>     {
>        int t, b;
>        // Read the top
>        in >> t;
>        // If there is a slash, read the next number
>        char c;
>        in >> c;
>        if (c == '/')
>           in >> b;
>        else
>        {
>           in.putback(c);
>           b = 1;
>        }
>        r = Fraction(t, b);
>        return in;
>     }

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