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📁 《Big C++ 》Third Edition电子书和代码全集-Part1

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<h2><font color="#009999">20.4 Friend - syntax (cont.)</font></h2>
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						Example:</font></td>
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<pre>class Node
{
public:
   Node(string s);
private:
   string data;
   Node* previous;
   Node* next;
<font color="#009999">friend class List;
friend class Iterator;</font>
};
class Employee
{
   . . .
   <font color="#009999">friend ostream&amp; operator&lt;&lt;(ostream&amp; out,
      const Employee&amp; e)</font>
};</pre>
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