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- Listing 6
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- class rational
- {
- public:
- rational() : num(0), denom(1) { }
- ...
- friend ostream &operator<<(ostream &, rational)
- private:
- long num, denom;
- void simplify();
- };
-
- ...
-
- ostream &operator<<(ostream &os, rational r)
- {
- os << '(' << r.num << '/' << r.denom << ')';
- }
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-