item.h.html

来自「《Big C++ 》Third Edition电子书和代码全集-Part1」· HTML 代码 · 共 47 行

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<head>
	<title>item.h</title>
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<body>
<pre>  1  #ifndef ITEM_H
  2  #define ITEM_H
  3  
  4  #include &lt;string&gt;
  5  
  6  using namespace std;
  7  
  8  <font color='#0000cc'>/**
  9     Describes an item in an invoice.
 10  */</font>
 11  class Item
 12  {
 13  public:
 14     <font color='#0000cc'>/**
 15        Gets the unit price of this item.
 16        @return the unit price
 17     */</font>
 18     virtual double get_unit_price() const = 0;
 19     <font color='#0000cc'>/**
 20        Gets the description of this item.
 21        @return the description
 22     */</font>
 23     virtual string get_description() const = 0;
 24     <font color='#0000cc'>/**
 25        Gets the quantity of this item.
 26        @return the quantity
 27     */</font>
 28     virtual int get_quantity() const = 0;
 29     <font color='#0000cc'>/**
 30        Gets the total price of this item.
 31        @return the total price
 32     */</font>
 33     double get_total_price() const;
 34     virtual ~Item();
 35  };
 36  
 37  #endif</pre>
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