slide0023.htm
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<title>第三章</title>
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<div style='mso-line-spacing:"110 20 0";position:absolute;top:6.25%;
left:10.11%;width:88.95%;height:4.25%'><span style='mso-special-format:nobullet;
display:none'>•</span><span style='font-family:宋体;mso-fareast-font-family:
宋体;font-size:69%;color:#0033CC'><b>说明：计算时自动调整精度 </b></span></div>
<div style='mso-line-spacing:"110 20 0";position:absolute;top:12.25%;
left:10.11%;width:88.95%;height:4.75%'><span style='mso-special-format:nobullet;
display:none'>•</span><span style='font-size:69%;color:#0033CC'><b><span
style='mso-spacerun:yes'>
</span></b></span><span style='font-family:宋体;mso-fareast-font-family:宋体;
font-size:69%;color:#0033CC'><b>特例见</b></span><span lang=EN-US
style='font-size:69%;color:#0033CC;mso-fareast-language:ZH-CN'><b>P56 </b></span></div>
<div style='mso-line-spacing:"110 20 0";position:absolute;top:19.5%;
left:10.11%;width:88.95%;height:5.5%'><span style='mso-special-format:nobullet;
display:none'>•</span><span lang=EN-US style='font-family:宋体;mso-fareast-font-family:
宋体;font-size:88%;color:#FF3300;mso-fareast-language:ZH-CN;display:none'><b> </b></span></div>
<div style='mso-line-spacing:"110 20 0";position:absolute;top:27.0%;
left:10.11%;width:88.95%;height:6.0%'><span style='mso-special-format:nobullet;
display:none'>•</span><span lang=EN-US style='font-size:88%;color:#FF3300;
mso-fareast-language:ZH-CN'><b>2. </b></span><span style='font-family:宋体;
mso-fareast-font-family:宋体;font-size:88%;color:#FF3300'><b>字符串运算符与字符串表达式</b></span><span
style='font-size:88%;color:#FF3300'><b> </b></span><span style='font-family:
宋体;mso-ascii-font-family:宋体;mso-fareast-font-family:宋体;display:none'><b> </b></span></div>
<div style='mso-line-spacing:"110 5 0";position:absolute;top:34.25%;
left:10.11%;width:94.94%;height:6.0%'><span style='mso-special-format:nobullet;
display:none'>•</span><span style='font-size:88%;color:#FF3300'><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:#FF3300'><b>字符串运算符有：</b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%;color:#FF3300'><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>、</b></span><span lang=EN-US style='font-size:75%;
color:#FF3300;mso-fareast-language:ZH-CN'><b>+ </b></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>。</b></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>功能是字符串连接 </b></span></div>
<div style='text-align:justify;mso-line-spacing:"110 5 0";position:absolute;
top:41.75%;left:10.11%;width:10.29%;height:4.75%'><nobr><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>例如：</b></span><span
style='font-family:"Arial Unicode MS";mso-fareast-font-family:"Arial Unicode MS";
font-size:75%;display:none'><b> </b></span></nobr></div>
<div style='text-align:justify;mso-line-spacing:"110 5 0";position:absolute;
top:47.25%;left:10.11%;width:81.64%;height:5.25%'><nobr><span
style='mso-special-format:nobullet;display:none'>•</span><span
style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
mso-fareast-font-family:"Arial Unicode MS";font-size:75%'><b> "ABCD"
+ "EFGHI"<span
style='mso-spacerun:yes'>
</span>' </b></span><span style='font-family:宋体;mso-fareast-font-family:宋体;
font-size:75%'><b>结果为：</b></span><span lang=EN-US style='font-family:"Times New Roman";
mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:"Arial Unicode MS";
font-size:75%;mso-fareast-language:ZH-CN'><b>ABCDEFGHI </b></span></nobr></div>
<div style='text-align:justify;mso-line-spacing:"110 5 0";position:absolute;
top:53.5%;left:10.11%;width:85.95%;height:5.25%'><nobr><span style='mso-special-format:
nobullet;display:none'>•</span><span lang=EN-US style='font-family:"Times New Roman";
mso-fareast-font-family:"Arial Unicode MS";mso-hansi-font-family:"Times New Roman";
font-size:75%;mso-fareast-language:ZH-CN'><b>“ VB ”<span
style='mso-spacerun:yes'> </span>& “</b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>程序设计教程</b></span><span
style='font-family:"Times New Roman";mso-fareast-font-family:"Arial Unicode MS";
mso-hansi-font-family:"Times New Roman";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>结果为：</b></span><span lang=EN-US style='font-family:"Times New Roman";
mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:"Arial Unicode MS";
font-size:75%;mso-fareast-language:ZH-CN'><b>VB</b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>程序设计教程</b></span><span
style='font-family:"Arial Unicode MS";mso-fareast-font-family:"Arial Unicode MS";
font-size:75%;display:none'><b> </b></span></nobr></div>
<div style='mso-line-spacing:"110 5 0"'><span style='position:absolute;
top:60.0%;left:10.11%;width:104.68%;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：当连接符两旁的操作量都为字符串时，上述两个连接</b></span></span><span
style='position:absolute;top:65.5%;left:13.85%;width:85.2%;height:5.25%'><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>符等价。它们区别是：</b></span><span
style='font-size:75%'><b> </b></span></span></div>
<div style='mso-line-spacing:"110 5 0";position:absolute;top:71.5%;left:10.11%;
width:92.88%;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
lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
mso-fareast-font-family:"Arial Unicode MS";font-size:75%;color:red;mso-fareast-language:
ZH-CN'><b>+</b></span><span style='font-family:宋体;mso-fareast-font-family:
宋体;font-size:75%;color:red'><b>（连接运算）</b></span><span style='font-family:宋体;
mso-fareast-font-family:宋体;font-size:75%'><b>：两个操作数均应为字符串类型； </b></span></div>
<div style='mso-line-spacing:"110 5 0"'><span style='position:absolute;
top:77.75%;left:10.11%;width:100.93%;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
lang=EN-US style='font-size:75%;color:red;mso-fareast-language:ZH-CN'><b>&</b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%;color:red'><b>（连接运算）</b></span><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>：两个操作数既可为字符型也可为数值</b></span></span><span
style='position:absolute;top:84.0%;left:13.85%;width:100.74%;height:4.75%'><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>型，当是数值型时，系统自动先将其转换为数字字符，然</b></span></span><span
style='position:absolute;top:89.5%;left:13.85%;width:85.2%;height:5.25%'><span
style='font-family:宋体;mso-fareast-font-family:宋体;font-size:75%'><b>后进行连接操作。</b></span><span
style='font-size:75%'><b> </b></span></span></div>
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