⭐ 欢迎来到虫虫下载站！ | 📦 资源下载 📁 资源专辑 ℹ️ 关于我们
⭐ 虫虫下载站
📤 上传资源

📄 minpas.htm

📁 建立《编译原理网络课程》的目的不仅使学生掌握构造编译程序的原理和技术
💻 HTM
📖 第 1 页 / 共 4 页
字号:
🔍
1234 
             THEN  
BEGIN</font></span></p> 
<p class="MsoPlainText"><span lang="EN-US" style="font-family: Times New Roman"> 
<font size="2">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
partition;</font></span></p> 
<p class="MsoPlainText"><span lang="EN-US" style="font-family: Times New Roman"> 
<font size="2">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
quicksort(m , j);</font></span></p> 
<p class="MsoPlainText"><span lang="EN-US" style="font-family: Times New Roman"> 
<font size="2">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
quicksort(i , n)</font></span></p> 
<p class="MsoPlainText"><span lang="EN-US" style="font-family: Times New Roman"> 
<font size="2">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
END;</font></span></p> 
<p class="MsoPlainText"><span lang="EN-US" style="font-family: Times New Roman"> 
<font size="2">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; END;</font></span></p> 
<p class="MsoPlainText"><span lang="EN-US" style="font-family: Times New Roman"> 
<font size="2">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; BEGIN</font></span></p> 
<p class="MsoPlainText"><span lang="EN-US" style="font-family: Times New Roman"> 
<font size="2">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; readarray(a);</font></span></p> 
<p class="MsoPlainText"><span lang="EN-US" style="font-family: Times New Roman"> 
<font size="2">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; quicksort(1,max);</font></span></p> 
<p class="MsoPlainText"><span lang="EN-US" style="font-family: Times New Roman"> 
<font size="2">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; writearray(a);</font></span></p> 
<p class="MsoNormal" style="text-indent: 42.0pt"><span lang="EN-US"><font size="2">END.</font></span></p>
<p class="MsoNormal" style="text-indent: -18.0pt; margin-left: 50.55pt">
<font size="2">
<span lang="EN-US">2.<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
</span></span><span style="font-family: 宋体">说明的作用域规则</span></font></p> 
<p class="MsoNormal" style="margin-left: 50.55pt"><font size="2"><span style="font-family: 宋体">
把每个过程看成一个块</span><span lang="EN-US">,</span><span style="font-family: 宋体">说明的作用域规则由最近嵌套规则给出</span><span lang="EN-US">:</span></font></p>
<p class="MsoNormal" style="text-indent: 52.5pt"><span lang="EN-US"><font size="2">&nbsp;(a) 
</font> </span> 
<font size="2"> 
<span style="font-family: 宋体">在块</span><span lang="EN-US">B</span><span style="font-family: 宋体">中的一个说明的作用域是块</span><span lang="EN-US">B</span><span style="font-family: 宋体">的正文</span><span lang="EN-US">;</span></font></p>
<p class="MsoNormal" style="text-indent: 42.0pt; margin-left: 21.0pt">
<font size="2">
<span lang="EN-US">(b) </span><span style="font-family: 宋体">如名字</span><span lang="EN-US">x</span><span style="font-family: 宋体">在块</span><span lang="EN-US">B</span><span style="font-family: 宋体">中没有说明</span><span lang="EN-US">,</span><span style="font-family: 宋体">那么</span><span lang="EN-US">,x</span><span style="font-family: 宋体">在块</span><span lang="EN-US">B</span><span style="font-family: 宋体">中的出现是在一个外围块</span><span lang="EN-US">B'</span><span style="font-family: 宋体">中</span></font></p>
<p class="MsoNormal" style="text-indent: 52.5pt; margin-left: 21.0pt">
<font size="2">
<span style="font-family: 宋体">的</span><span lang="EN-US">x</span><span style="font-family: 宋体">说明的作用域之内</span><span lang="EN-US">,</span><span style="font-family: 宋体">并且使得</span><span lang="EN-US">:</span></font></p>
<p class="MsoNormal" style="text-indent: 73.5pt"><font size="2"><span lang="EN-US">(</span><span style="font-family: 宋体">ⅰ</span><span lang="EN-US">) 
B'</span><span style="font-family: 宋体">中有</span><span lang="EN-US">x</span><span style="font-family: 宋体">的说明</span><span lang="EN-US">.</span></font></p>
<p class="MsoNormal" style="text-indent: 73.5pt">
<font size="2">
<span lang="EN-US" style="font-family: 宋体">(ⅱ)</span><span lang="EN-US"> B'</span><span style="font-family: 宋体">是包围</span><span lang="EN-US">B</span><span style="font-family: 宋体">的<span lang="EN-US">,相对于其他任何具有名字x的说明且包围B的块而言,</span></span></font></p>
<p class="MsoNormal" style="text-indent: 94.5pt"><span style="font-family: 宋体">
<font size="2">
是离<span lang="EN-US">  B最近的.</span></font></span></p> 
<p class="MsoNormal" style="text-indent: -18.0pt; margin-left: 50.55pt"> 
<font size="2">
<span lang="EN-US" style="font-family: 宋体">3.<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;  
</span></span><span style="font-family: 宋体">引用调用<span lang="EN-US">(call_by_reference)</span></span></font></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span style="font-family: 宋体"><font size="2">调用过程把实在参数的存储地址传递给相应的形式参数<span lang="EN-US">.例如:</span></font></span></p>
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt">
<span lang="EN-US"><font size="2">&nbsp;</font></span></p>
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt">
<span lang="EN-US"><font size="2">&nbsp;</font></span></p>
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt">
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp; PROGRAM&nbsp; reference(input , output);</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; VAR a , b : integer;</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PROCEDURE&nbsp; swap(VAR&nbsp;  
x , y : integer);</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; VAR&nbsp;  
temp : integer ;</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; BEGIN</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
temp := x ;</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
x := y ;</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
y := temp ;</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; END ;</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; BEGIN</font></span></p> 
<p class="MsoNormal" style="text-indent: -63.0pt; margin-left: 116.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a :=  
1;&nbsp;&nbsp;&nbsp; b := 2 ;</font></span></p> 
<p class="MsoNormal" style="text-indent: -63.0pt; margin-left: 116.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; swap (  
a , b ) ;</font> </span></p> 
<p class="MsoNormal" style="text-indent: -63.0pt; margin-left: 116.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
writeln( a , b )</font></span></p> 
<p class="MsoNormal" style="text-indent: -63.0pt; margin-left: 116.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; END.</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span style="font-family: 宋体"><font size="2">其语义用类</font></span><font size="2"><span lang="EN-US">c</span><span style="font-family: 宋体">语言表示如下</span><span lang="EN-US">:</span></font></p>
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt">
<span lang="EN-US"><font size="2">&nbsp;</font> </span></p>
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt">
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; void swap( int &nbsp;* x  
, int&nbsp; *y )</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {  
&nbsp;int&nbsp; temp&nbsp; ;</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
temp&nbsp; = &nbsp;*x ;</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
*x&nbsp; = &nbsp;*y ;</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
*y&nbsp; =&nbsp; temp ;</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
}</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; main( )</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {</font></span></p> 
<p class="MsoNormal" style="text-indent: 84.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">int a , b ;&nbsp;&nbsp;</font> </span></p> 
<p class="MsoNormal" style="text-indent: -63.0pt; margin-left: 116.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;a = 1;&nbsp;&nbsp;&nbsp; b = 2 ;</font></span></p> 
<p class="MsoNormal" style="text-indent: -63.0pt; margin-left: 116.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;swap ( &amp;a , &amp;b ) ;</font> </span></p> 
<p class="MsoNormal" style="text-indent: -63.0pt; margin-left: 116.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;printf( “%d%d”, a , b )</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<span lang="EN-US"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</font></span></p> 
<p class="MsoNormal" style="text-indent: 21.0pt; margin-left: 32.55pt"> 
<font size="2">
<span lang="EN-US">4.</span><span style="font-family: 宋体">在</span><span lang="EN-US">min_Pascal</span><span style="font-family: 宋体">中</span><span lang="EN-US">,</span><span style="font-family: 宋体">类型相等是两个数据的类型名字相等</span><span lang="EN-US">.</span></font></p>
<p><font size="2"><br>
　</font></td>
</tr>
</table>
</body>
</html>
1234

⌨️ 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 + -