📄 answer_5.htm
字号:
<html xmlns:o="urn:schemas-microsoft-com:office:office"
xmlns:w="urn:schemas-microsoft-com:office:word"
xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=GB2312">
<meta name=ProgId content=Word.Document>
<meta name=Generator content="Microsoft Word 9">
<meta name=Originator content="Microsoft Word 9">
<link rel=File-List href="./Answer_5.files/filelist.xml">
<title>●试题五</title>
<!--[if gte mso 9]><xml>
<o:DocumentProperties>
<o:Author>聂钰桢</o:Author>
<o:LastAuthor>聂钰桢</o:LastAuthor>
<o:Revision>1</o:Revision>
<o:TotalTime>0</o:TotalTime>
<o:Created>2006-03-04T09:58:00Z</o:Created>
<o:LastSaved>2006-03-04T09:58:00Z</o:LastSaved>
<o:Pages>1</o:Pages>
<o:Company>Microsoft</o:Company>
<o:Lines>1</o:Lines>
<o:Paragraphs>1</o:Paragraphs>
<o:Version>9.2812</o:Version>
</o:DocumentProperties>
</xml><![endif]--><!--[if gte mso 9]><xml>
<w:WordDocument>
<w:PunctuationKerning/>
<w:DrawingGridVerticalSpacing>7.8 磅</w:DrawingGridVerticalSpacing>
<w:DisplayHorizontalDrawingGridEvery>0</w:DisplayHorizontalDrawingGridEvery>
<w:DisplayVerticalDrawingGridEvery>2</w:DisplayVerticalDrawingGridEvery>
<w:Compatibility>
<w:SpaceForUL/>
<w:BalanceSingleByteDoubleByteWidth/>
<w:DoNotLeaveBackslashAlone/>
<w:ULTrailSpace/>
<w:DoNotExpandShiftReturn/>
<w:AdjustLineHeightInTable/>
<w:UseFELayout/>
</w:Compatibility>
</w:WordDocument>
</xml><![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"MS Sans Serif";
panose-1:0 0 0 0 0 0 0 0 0 0;
mso-font-charset:0;
mso-generic-font-family:swiss;
mso-font-format:other;
mso-font-pitch:variable;
mso-font-signature:3 0 0 0 1 0;}
@font-face
{font-family:宋体;
panose-1:2 1 6 0 3 1 1 1 1 1;
mso-font-alt:SimSun;
mso-font-charset:134;
mso-generic-font-family:auto;
mso-font-pitch:variable;
mso-font-signature:3 135135232 16 0 262145 0;}
@font-face
{font-family:"\@宋体";
panose-1:2 1 6 0 3 1 1 1 1 1;
mso-font-charset:134;
mso-generic-font-family:auto;
mso-font-pitch:variable;
mso-font-signature:3 135135232 16 0 262145 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{mso-style-parent:"";
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
mso-pagination:none;
font-size:10.5pt;
mso-bidi-font-size:12.0pt;
font-family:"Times New Roman";
mso-fareast-font-family:宋体;
mso-font-kerning:1.0pt;}
/* Page Definitions */
@page
{mso-page-border-surround-header:no;
mso-page-border-surround-footer:no;}
@page Section1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;
mso-header-margin:36.0pt;
mso-footer-margin:36.0pt;
mso-paper-source:0;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body lang=ZH-CN style='tab-interval:21.0pt;text-justify-trim:punctuation'>
<div class=Section1>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>●试题五<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>【答案】</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(1)true(2)payRate+bouns(3)hoursWorked*payRate(4)hoursWorked<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(5)hoursWorked*payRate(6)public
Manager(7)protected</span><span style='mso-bidi-font-size:10.5pt;font-family:
宋体;mso-hansi-font-family:"Times New Roman"'>：</span><span lang=EN-US
style='mso-bidi-font-size:10.5pt'>(8)Employee<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(9)ep[i]->getName()(10)ep[i]->pay(80)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>【解析】</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(1)</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>普通雇员类是所有类的基类，描述了雇员的一些基本信息，管理人员类从普通雇员类中派生，管理人员的付薪方式与普通雇员可能相同，所以该类添加了一个成员变量标识，并覆盖了基类的</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>pay()</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>函数。主管类从管理人员类中派生，主管人员是管理人员的一种，他们不仅支付固定薪水，而且还有奖金。所以在主管类中添加了</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>bonus</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>成员，保存他们的奖金数额，并覆盖了管理人员类的</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>pay()</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>函数重新计算工资。<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal align=left style='text-align:left;mso-layout-grid-align:
none;text-autospace:none'><span lang=EN-US style='mso-bidi-font-size:10.5pt'>(2)</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>程序中建立了</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>3</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>个雇员</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>一个普通雇员、一个管理人员和一个主管</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>)</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>的档案，并打印出各自的工资表。事实上，将</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>3</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>种雇员分开处理会很繁琐，如果能够把他们看作同一种类型，都看成雇员类</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>他们本来都是雇员</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>)</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>统一处理，但在计算工资时再调用各自的</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>pay()</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>函数，那程序会简单得多。这就需要利用多态特性，只要将</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>pay()</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>函数定义成虚函数，便可以实现了。</span><span
style='font-size:8.5pt;font-family:"MS Sans Serif";mso-font-kerning:0pt;
mso-ansi-language:ZH-CN'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
</div>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -