词法分析实验.zip_flex_词法分析_词法分析

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/625d9db8be9ad24cfa85d8e3/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/625d9db8be9ad24cfa85d8e3/bg1.jpg"><div class="c x1 y1 w2 h2"><div class="t m0 x2 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">实验报告<span class="_ _0"> </span><span class="ff2 fc1"> </span></div><div class="t m0 x2 h4 y3 ff1 fs1 fc0 sc0 ls0 ws0">实验目标<span class="_ _1"> </span><span class="ff2 fc1"> </span></div><div class="t m0 x2 h5 y4 ff3 fs2 fc0 sc0 ls0 ws0">使用<span class="ff4">LEX</span>作为工具生成<span class="ff4">PL0</span>语言的词法分析器，使用<span class="ff4">LEX</span>语言工具编写符合其语法规则的词法解析<span class="ff4">.lex</span>文</div><div class="t m0 x2 h5 y5 ff3 fs2 fc0 sc0 ls0 ws0">件，然后通过<span class="ff4">FLEX</span>编译成为<span class="ff4">lex.yy<span class="_ _2"></span>.c<span class="ff3">格式文件，通过</span>gcc<span class="ff3">进行编译之后成为可执行文件</span>ex<span class="_ _2"></span>e<span class="ff3">，接受输入源</span></span></div><div class="t m0 x2 h5 y6 ff3 fs2 fc0 sc0 ls0 ws0">程序的名字，作为唯一的参数。将每一个词的词性和位置通过标准化输出打印出来。</div><div class="t m0 x2 h4 y7 ff1 fs1 fc0 sc0 ls0 ws0">设计思路<span class="_ _1"> </span><span class="ff2 fc1"> </span></div><div class="t m0 x3 h5 y8 ff3 fs2 fc0 sc0 ls0 ws0">使用<span class="ff4">[" " ]</span>来表示所有的空白字符，对于空白字符全部跳过</div><div class="t m0 x3 h5 y9 ff3 fs2 fc0 sc0 ls0 ws0">为了准确的表达每一个词出现的位置，使用了两个全局变量，分别是<span class="ff4">line_no </span>和<span class="ff4">char_no</span>，用以记</div><div class="t m0 x3 h5 ya ff3 fs2 fc0 sc0 ls0 ws0">录当前的行号和当前行已经处理过的非空白符的数量。所以，在输出中给出的位置，是不把空白符</div><div class="t m0 x3 h5 yb ff3 fs2 fc0 sc0 ls0 ws0">号计算在内的。</div><div class="t m0 x3 h5 yc ff3 fs2 fc0 sc0 ls0 ws0">每次遇到<span class="ff4"> </span>换行符，都要把<span class="ff4">char_no</span>重新设置为<span class="ff4">1</span>，以便于记录当前行的字符量</div><div class="t m0 x3 h5 yd ff3 fs2 fc0 sc0 ls0 ws0">将大多数常见的情况和分类先使用辅助定义，以免下面的识别规则要重复的书写好多的正则表达</div><div class="t m0 x3 h5 ye ff3 fs2 fc0 sc0 ls0 ws0">式。能使用辅助定义的就一定要使用辅助定义。</div><div class="t m0 x3 h5 yf ff3 fs2 fc0 sc0 ls0 ws0">通过将数字分拆为整数部分，小数点之后的部分和科学计数法部分，可以实现语法的拓展，表示整</div><div class="t m0 x3 h5 y10 ff3 fs2 fc0 sc0 ls0 ws0">数，小数以及科学计数法</div><div class="t m0 x3 h5 y11 ff3 fs2 fc0 sc0 ls0 ws0">使用同一个正则表达式<span class="ff4">name</span>来归约所有的标识符和关键字，同时使用一个<span class="ff4">reserve </span>的<span class="ff4">char</span>数组把</div><div class="t m0 x3 h5 y12 ff3 fs2 fc0 sc0 ls0 ws0">所有的关键字放入到一个数组之中，使用<span class="ff4">name</span>规约出来之后，首先利用<span class="ff4">yyleng</span>来检查长度，如果</div><div class="t m0 x3 h5 y13 ff3 fs2 fc0 sc0 ls0 ws0">长度超过<span class="ff4">10</span>，就直接进行报错；如果没有超过长度限制，先检查是否在关键字集合之中，如果不</div><div class="t m0 x3 h5 y14 ff3 fs2 fc0 sc0 ls0 ws0">在，就分类成为标识符。</div><div class="t m0 x3 h5 y15 ff3 fs2 fc0 sc0 ls0 ws0">用户子程序直接采用<span class="ff4">PPT</span>上的模板，允许一个输入参数，作为输入源程序的地址。如果没有输入参</div><div class="t m0 x3 h5 y16 ff3 fs2 fc0 sc0 ls0 ws0">数，或者是输入的文件名字无法打开，就采用默认的测试程序作为输入<span class="ff4">,</span>对于每个输入的<span class="ff4">pl0</span>文件</div><div class="t m0 x3 h5 y17 ff3 fs2 fc0 sc0 ls0 ws0">（要求后缀必须是<span class="ff4">.pl0</span>的形式），都会新建立一个后缀为<span class="ff4">.out</span>，但是文件名不变的文件，并将词法</div><div class="t m0 x3 h5 y18 ff3 fs2 fc0 sc0 ls0 ws0">分析器运行结果的输出在该文件之中。</div><div class="t m0 x3 h5 y19 ff3 fs2 fc0 sc0 ls0 ws0">利用<span class="ff4">ﬂex</span>的匹配特点，<span class="ff4">ﬂe<span class="_ _2"></span>x<span class="ff3">优先使用前面的匹配规则，所以对于非法字符的处理，可以直接在最后</span></span></div><div class="t m0 x3 h5 y1a ff3 fs2 fc0 sc0 ls0 ws0">使用通用匹配符号<span class="ff4">. </span>来匹配所有的非法字符和非法序列。</div><div class="t m0 x2 h6 y1b ff2 fs1 fc0 sc0 ls0 ws0">EBNF<span class="_ _3"> </span><span class="fc1"> </span></div><div class="t m0 x2 h5 y1c ff4 fs2 fc0 sc0 ls0 ws0"><<span class="ff3">程序</span>> ::= <<span class="ff3">分程序</span>>.</div><div class="t m0 x2 h5 y1d ff4 fs2 fc0 sc0 ls0 ws0"><<span class="ff3">分程序</span>> ::= [<<span class="ff3">常量说明部分</span>>][<<span class="ff3">变量说明部分</span>>][<<span class="ff3">过程说明部分</span>>]<<span class="ff3">语句</span>></div><div class="t m0 x2 h5 y1e ff4 fs2 fc0 sc0 ls0 ws0"><<span class="ff3">常量说明部分</span>> ::= CONST<<span class="ff3">常量定义</span>>{,<<span class="ff3">常量定义</span>>};</div><div class="t m0 x2 h5 y1f ff4 fs2 fc0 sc0 ls0 ws0"><<span class="ff3">常量定义</span>> ::= <<span class="ff3">标识符</span>>=<<span class="ff3">无符号整数</span>></div><div class="t m0 x2 h7 y20 ff5 fs2 fc0 sc0 ls0 ws0"><</div><div class="t m0 x4 h8 y20 ff6 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">常</span></div><div class="t m0 x5 h8 y20 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">数</span></div><div class="t m0 x6 h8 y20 ff6 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">定</span></div><div class="t m0 x7 h8 y20 ff8 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">义</span></div><div class="t m0 x8 h7 y20 ff5 fs2 fc0 sc0 ls0 ws0">>::=int <</div><div class="t m0 x9 h8 y20 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">标</span></div><div class="t m0 xa h8 y20 ff9 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">识</span></div><div class="t m0 xb h8 y20 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 xc h7 y20 ff5 fs2 fc0 sc0 ls0 ws0">>=<</div><div class="t m0 xd h8 y20 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">无</span></div><div class="t m0 xe h8 y20 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 xf h8 y20 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">号</span></div><div class="t m0 x10 h8 y20 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">整数</span></div><div class="t m0 x11 h7 y20 ff5 fs2 fc0 sc0 ls0 ws0">>|real<</div><div class="t m0 x12 h8 y20 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">标</span></div><div class="t m0 x13 h8 y20 ff9 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">识</span></div><div class="t m0 x14 h8 y20 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x15 h7 y20 ff5 fs2 fc0 sc0 ls0 ws0">>=<</div><div class="t m0 x16 h8 y20 ffc fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">浮点</span></div><div class="t m0 x17 h8 y20 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">数</span></div><div class="t m0 x18 h7 y20 ff5 fs2 fc0 sc0 ls0 ws0">>|string <</div><div class="t m0 x19 h8 y20 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">标</span></div><div class="t m0 x1a h8 y20 ff9 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">识</span></div><div class="t m0 x1b h8 y20 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x1c h7 y20 ff5 fs2 fc0 sc0 ls0 ws0">>=<</div><div class="t m0 x1d h8 y20 ff6 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">字</span></div><div class="t m0 x1e h8 y20 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x1f h8 y20 ff8 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">串</span></div><div class="t m0 x20 h7 y20 ff5 fs2 fc0 sc0 ls0 ws0">></div><div class="t m0 x2 h5 y21 ff4 fs2 fc0 sc0 ls0 ws0"><<span class="ff3">无符号整数</span>> ::= <<span class="ff3">数字</span>>{<<span class="ff3">数字</span>>}</div><div class="t m0 x2 h7 y22 ff5 fs2 fc0 sc0 ls0 ws0"><</div><div class="t m0 x4 h8 y22 ffc fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">浮点</span></div><div class="t m0 x6 h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">数</span></div><div class="t m0 x7 h7 y22 ff5 fs2 fc0 sc0 ls0 ws0">>=<</div><div class="t m0 x21 h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">无</span></div><div class="t m0 x22 h8 y22 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x23 h8 y22 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">号</span></div><div class="t m0 x24 h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">整数</span></div><div class="t m0 x25 h7 y22 ff5 fs2 fc0 sc0 ls0 ws0">>.<</div><div class="t m0 x26 h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">无</span></div><div class="t m0 x27 h8 y22 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x28 h8 y22 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">号</span></div><div class="t m0 x29 h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">整数</span></div><div class="t m0 x2a h7 y22 ff5 fs2 fc0 sc0 ls0 ws0">> | <</div><div class="t m0 x2b h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">无</span></div><div class="t m0 x2c h8 y22 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x2d h8 y22 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">号</span></div><div class="t m0 x2e h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">整数</span></div><div class="t m0 x2f h7 y22 ff5 fs2 fc0 sc0 ls0 ws0">>.<</div><div class="t m0 x30 h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">无</span></div><div class="t m0 x31 h8 y22 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x32 h8 y22 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">号</span></div><div class="t m0 x33 h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">整数</span></div><div class="t m0 x34 h7 y22 ff5 fs2 fc0 sc0 ls0 ws0">>E+|-<</div><div class="t m0 x35 h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">无</span></div><div class="t m0 x36 h8 y22 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x37 h8 y22 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">号</span></div><div class="t m0 x38 h8 y22 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">整数</span></div><div class="t m0 x1d h7 y22 ff5 fs2 fc0 sc0 ls0 ws0">></div><div class="t m0 x2 h7 y23 ff5 fs2 fc0 sc0 ls0 ws0"><</div><div class="t m0 x4 h8 y23 ff6 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">字</span></div><div class="t m0 x5 h8 y23 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x6 h8 y23 ff8 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">串</span></div><div class="t m0 x7 h7 y23 ff5 fs2 fc0 sc0 ls0 ws0">>='<</div><div class="t m0 x39 h8 y23 ff6 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">字</span></div><div class="t m0 x3a h8 y23 ffc fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">母</span></div><div class="t m0 x3b h7 y23 ff5 fs2 fc0 sc0 ls0 ws0">>|<</div><div class="t m0 xa h8 y23 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">数</span></div><div class="t m0 xb h8 y23 ff6 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">字</span></div><div class="t m0 xc h7 y23 ff5 fs2 fc0 sc0 ls0 ws0">>{<</div><div class="t m0 x27 h8 y23 ff6 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">字</span></div><div class="t m0 x28 h8 y23 ffc fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">母</span></div><div class="t m0 x29 h7 y23 ff5 fs2 fc0 sc0 ls0 ws0">>|<</div><div class="t m0 x3c h8 y23 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">数</span></div><div class="t m0 x3d h8 y23 ff6 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">字</span></div><div class="t m0 x3e h7 y23 ff5 fs2 fc0 sc0 ls0 ws0">>}'</div><div class="t m0 x2 h5 y24 ff4 fs2 fc0 sc0 ls0 ws0">•<<span class="ff3">变量说明部分</span>> ::= V<span class="_ _2"></span>AR<<span class="ff3">标识符</span>>{,<<span class="ff3">标识符</span>>};</div><div class="t m0 x2 h7 y25 ff5 fs2 fc0 sc0 ls0 ws0"><</div><div class="t m0 x4 h8 y25 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">变</span></div><div class="t m0 x5 h8 y25 ffd fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">量</span></div><div class="t m0 x6 h8 y25 ff9 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">说</span></div><div class="t m0 x7 h8 y25 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">明</span></div><div class="t m0 x8 h8 y25 ffd fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">部</span></div><div class="t m0 x3f h8 y25 ff8 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">分</span></div><div class="t m0 x40 h7 y25 ff5 fs2 fc0 sc0 ls0 ws0">></div><div class="t m0 x41 h8 y25 ffe fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">：：</span></div><div class="t m0 xa h7 y25 ff5 fs2 fc0 sc0 ls0 ws0">=var <</div><div class="t m0 x42 h8 y25 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">声</span></div><div class="t m0 x43 h8 y25 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">明</span></div><div class="t m0 x44 h8 y25 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">句</span></div><div class="t m0 x45 h7 y25 ff5 fs2 fc0 sc0 ls0 ws0">>{<;</div><div class="t m0 x2a h8 y25 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">声</span></div><div class="t m0 x46 h8 y25 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">明</span></div><div class="t m0 x47 h8 y25 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">句</span></div><div class="t m0 x48 h7 y25 ff5 fs2 fc0 sc0 ls0 ws0">>}</div><div class="t m0 x49 h8 y25 ffe fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">；</span></div><div class="t m0 x2 h7 y26 ff5 fs2 fc0 sc0 ls0 ws0"><</div><div class="t m0 x4 h8 y26 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">声</span></div><div class="t m0 x5 h8 y26 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">明</span></div><div class="t m0 x6 h8 y26 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">句</span></div><div class="t m0 x7 h7 y26 ff5 fs2 fc0 sc0 ls0 ws0">></div><div class="t m0 x4a h8 y26 ffe fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">：：</span></div><div class="t m0 x4b h7 y26 ff5 fs2 fc0 sc0 ls0 ws0">=<</div><div class="t m0 x23 h8 y26 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">标</span></div><div class="t m0 x24 h8 y26 ff9 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">识</span></div><div class="t m0 x4c h8 y26 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x25 h7 y26 ff5 fs2 fc0 sc0 ls0 ws0">>|<</div><div class="t m0 x42 h8 y26 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">数</span></div><div class="t m0 x43 h8 y26 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">组</span></div><div class="t m0 x44 h7 y26 ff5 fs2 fc0 sc0 ls0 ws0">>{</div><div class="t m0 xf h8 y26 ffe fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">，</span></div><div class="t m0 x10 h7 y26 ff5 fs2 fc0 sc0 ls0 ws0"><</div><div class="t m0 x4d h8 y26 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">标</span></div><div class="t m0 x4e h8 y26 ff9 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">识</span></div><div class="t m0 x4f h8 y26 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x50 h7 y26 ff5 fs2 fc0 sc0 ls0 ws0">>|<</div><div class="t m0 x51 h8 y26 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">数</span></div><div class="t m0 x52 h8 y26 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">组</span></div><div class="t m0 x53 h7 y26 ff5 fs2 fc0 sc0 ls0 ws0">>}</div><div class="t m0 x54 h8 y26 ffe fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">：</span></div><div class="t m0 x55 h7 y26 ff5 fs2 fc0 sc0 ls0 ws0">int|real|string </div><div class="t m0 x56 h8 y26 ffe fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">；</span></div><div class="t m0 x2 h7 y27 ff5 fs2 fc0 sc0 ls0 ws0"><</div><div class="t m0 x4 h8 y27 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">数</span></div><div class="t m0 x5 h8 y27 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">组</span></div><div class="t m0 x6 h7 y27 ff5 fs2 fc0 sc0 ls0 ws0">></div><div class="t m0 x57 h8 y27 ffe fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">：：</span></div><div class="t m0 x58 h7 y27 ff5 fs2 fc0 sc0 ls0 ws0">=<</div><div class="t m0 x22 h8 y27 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">标</span></div><div class="t m0 x23 h8 y27 ff9 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">识</span></div><div class="t m0 x24 h8 y27 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x4c h7 y27 ff5 fs2 fc0 sc0 ls0 ws0">><</div><div class="t m0 x59 h8 y27 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">无</span></div><div class="t m0 x5a h8 y27 ffa fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">符</span></div><div class="t m0 x5b h8 y27 ffb fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">号</span></div><div class="t m0 x5c h8 y27 ff7 fs2 fc0 sc0 ls0 ws0"><span class="fc2 sc0">整数</span></div><div class="t m0 x5d h7 y27 ff5 fs2 fc0 sc0 ls0 ws0">></div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div> </body> </html>