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<title>第四章</title>
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<div v:shape="_x0000_s157698" class=T style='position:absolute;top:5.0%;
left:7.67%;width:83.14%;height:9.25%'><span lang=EN-US style='mso-fareast-language:
ZH-CN'><b>4.2 </b></span><span style='font-family:宋体;mso-fareast-font-family:
宋体'><b>顺序结构</b></span></div>
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<div style='position:absolute;top:15.5%;left:7.67%;width:90.63%;height:6.25%'><span
style='mso-special-format:nobullet;display:none'>•</span><span lang=EN-US
style='font-family:黑体;mso-ascii-font-family:黑体;mso-fareast-language:ZH-CN'><b>4.2.1
</b></span><span style='font-family:宋体;mso-fareast-font-family:宋体'><b>赋值语句</b></span><span
style='font-family:黑体;mso-ascii-font-family:黑体;mso-fareast-font-family:黑体'><b>
</b></span></div>
<div style='position:absolute;top:24.0%;left:7.67%;width:90.63%;height:6.25%'><span
style='mso-special-format:nobullet;display:none'>•</span><span
style='font-family:黑体;mso-ascii-font-family:黑体;mso-fareast-font-family:黑体'><b><span
style='mso-spacerun:yes'> </span></b></span><span style='font-family:
黑体;mso-ascii-font-family:黑体;mso-fareast-font-family:黑体;font-size:88%'><b>形式:<span
style='mso-spacerun:yes'> </span></b></span><span style='font-family:
宋体;mso-fareast-font-family:宋体;font-size:88%;color:#FF0066'><b>变量名＝表达式 </b></span></div>
<div style='position:absolute;top:31.75%;left:7.67%;width:90.63%;height:6.0%'><span
style='mso-special-format:nobullet;display:none'>•</span><span
style='font-size:88%;color:#FF0066'><b><span
style='mso-spacerun:yes'>
</span></b></span><span style='font-family:宋体;mso-fareast-font-family:宋体;
font-size:88%;color:#FF0066'><b>对象</b></span><span lang=EN-US
style='font-size:88%;color:#FF0066;mso-fareast-language:ZH-CN'><b>.</b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:88%;color:#FF0066'><b>属性＝表达式 </b></span></div>
<div style='position:absolute;top:39.0%;left:7.67%;width:102.43%;height:6.0%'><span
style='mso-special-format:nobullet;display:none'>•</span><span
style='font-size:88%;color:#FF0066'><b><span
style='mso-spacerun:yes'> </span></b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>功能：</b></span><span
style='font-size:75%'><b> </b></span><span style='font-family:宋体;mso-fareast-font-family:
宋体;font-size:75%'><b>将表达式的值赋值给变量名或指定对象的属性。</b></span><span style='font-size:
75%'><b> </b></span></div>
<div style='position:absolute;top:46.25%;left:7.67%;width:90.63%;height:5.25%'><span
style='mso-special-format:nobullet;display:none'>•</span><span
style='font-size:75%'><b><span
style='mso-spacerun:yes'>
</span></b></span><span style='font-family:宋体;mso-fareast-font-family:宋体;
font-size:75%'><b>一般用于给变量赋值或对控件设定属性值</b></span><span lang=EN-US
style='font-size:75%;mso-fareast-language:ZH-CN'><b>. </b></span></div>
<div style='position:absolute;top:52.75%;left:7.67%;width:90.63%;height:5.25%'><span
style='mso-special-format:nobullet;display:none'>•</span><span lang=EN-US
style='font-size:75%;mso-fareast-language:ZH-CN'><b><span
style='mso-spacerun:yes'> </span></b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>例：</b></span><span
style='font-size:75%'><b><span
style='mso-spacerun:yes'> </span>sRate!=0.1 </b></span></div>
<div style='position:absolute;top:59.0%;left:7.67%;width:90.63%;height:5.25%'><span
style='mso-special-format:nobullet;display:none'>•</span><span lang=EN-US
style='font-size:75%;mso-fareast-language:ZH-CN'><b><span
style='mso-spacerun:yes'>
</span>Text1.Text </b></span><span style='font-family:宋体;mso-fareast-font-family:
宋体;font-size:75%'><b>＝</b></span><span style='font-size:75%'><b> "</b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>欢迎使用</b></span><span
lang=EN-US style='font-size:75%;mso-fareast-language:ZH-CN'><b>Visual Basic
6.0</b></span><span lang=EN-US style='font-size:75%;mso-fareast-language:ZH-CN'><b>”</b></span><span
lang=EN-US style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%;
mso-fareast-language:ZH-CN;display:none'><b> </b></span></div>
<div style='position:absolute;top:66.0%;left:7.67%;width:90.63%;height:4.75%'><span
style='mso-special-format:nobullet;display:none'>•</span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>说明： </b></span></div>
<span style='position:absolute;top:72.0%;left:7.67%;width:103.74%;height:5.25%'><span
style='mso-special-format:nobullet;display:none'>•</span><span
style='font-size:75%'><b><span style='mso-spacerun:yes'> </span>1.<span
style='mso-spacerun:yes'> </span></b></span><span style='font-family:
宋体;mso-fareast-font-family:宋体;font-size:75%'><b>执行过程：先求表达式的值，然后将值赋值给左边的变</b></span></span><span
style='position:absolute;top:77.75%;left:11.42%;width:86.89%;height:4.75%'><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>量。 </b></span></span><span
style='position:absolute;top:83.5%;left:7.67%;width:103.74%;height:5.25%'><span
style='mso-special-format:nobullet;display:none'>•</span><span
style='font-size:75%'><b><span style='mso-spacerun:yes'> </span>2.<span
style='mso-spacerun:yes'> </span></b></span><span style='font-family:
宋体;mso-fareast-font-family:宋体;font-size:75%'><b>右边表达式可以是变量、常量、函数调用等特殊的表达</b></span></span><span
style='position:absolute;top:89.5%;left:11.42%;width:86.89%;height:4.75%'><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>式。 </b></span></span>
<div style='position:absolute;top:95.25%;left:7.67%;width:90.63%;height:5.25%'><span
style='mso-special-format:nobullet;display:none'>•</span><span
style='font-size:75%'><b><span style='mso-spacerun:yes'> </span>3. </b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>不要将</b></span><span
style='font-size:75%'><b>“</b></span><span style='font-family:宋体;mso-fareast-font-family:
宋体;font-size:75%'><b>＝</b></span><span style='font-size:75%'><b>”</b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>理解为数学上的等号： </b></span></div>
<span style='position:absolute;top:101.75%;left:7.67%;width:104.68%;
height:5.25%'><span style='mso-special-format:nobullet;display:none'>•</span><span
style='font-size:75%'><b><span
style='mso-spacerun:yes'>
</span>A=A+1<span
style='mso-spacerun:yes'> </span></b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>是表示将</b></span><span
lang=EN-US style='font-size:75%;mso-fareast-language:ZH-CN'><b>A</b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>单元的值加１后以放回到</b></span><span
lang=EN-US style='font-size:75%;mso-fareast-language:ZH-CN'><b>A</b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>单</b></span></span><span
style='position:absolute;top:107.5%;left:11.42%;width:86.89%;height:4.75%'><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>元。</b></span></span></div>
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