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为了实现编译器的实用，可自由编写源代码…
为了实现的编译程序实用，源程序可采用自由书写格式，即一行内可以书写多个语句，一个语句也可以占领多行书写；标识符的前20个字符有效；整数用2个字节表示；长整数用4个字节表示。这样词法分析程序的主要工作为：
（1）从源程序文件中读入字符。
（2）统计行数和列数用于错误单词的定位。
（3）删除空格类字符，包括回车、制表符空格。
（4）按拼写单词，并用（种别，单词）二元式表示。
（5）根据需要是否填写标识符表供以后各阶段使用。
这里采用的编译程序的实现方法是一遍扫描，即从左到右只扫描一次源程序，也就是词法分析作为语法分析的一个子程序。故在编写词法分析程序时，用重复调用词法分析子程序取一单词的方法得到整个源程序的二元式流。
-in order to achieve the compiler practical, available free to write source code format, that his writing can be more than words, a statement can occupy multiple lines written; identifier of 20 characters effective; Integer with two byte; long integer with four byte. This lexical analysis for major work : (1) from source document read into the characters. (2) Statistics and a few mistakes out a few words for positioning. (3) delete the blank type characters, including the carriage return, tab spaces. (4) the spelling words and use (other species, words) dual ceremony. (5) whether the need for completing the table identifier subsequent stages. Here the compilers of th
- 2022-01-23 11:14:40下载
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thread 多线程演示
thread 多线程演示-thread multithreading demonstrates
- 2022-03-03 16:10:02下载
- 积分：1
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这是很好的编译原理的词法分析程序。供大家参考！
这是很好的编译原理的词法分析程序。供大家参考！
- 2022-03-24 08:00:15下载
- 积分：1
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这是一个代码构建自己的解决数独游戏。它的效率是非常…
it is a code build by my own for solving the sudoku game .its efficeincy is very high-it is a code build by my own for solving the sudoku game .its efficeincy is very high....
- 2022-04-19 06:01:36下载
- 积分：1
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写在C++中的堆栈代码
stack code that wrote in C-stack code that wrote in C++
- 2023-07-03 04:25:02下载
- 积分：1
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LL(1)文法使用的是确定的自顶向下的分析技术。LL(1)的含义是：第一个L表明自顶向下分析是从左向右扫描输入串，第2个L表明分析过程中将使用最左推导，1表明只...
LL(1)文法使用的是确定的自顶向下的分析技术。LL(1)的含义是：第一个L表明自顶向下分析是从左向右扫描输入串，第2个L表明分析过程中将使用最左推导，1表明只需向右看一个符号便可决定如何推导，即选择哪个产生式(规则)进行推导。
LL(1)文法的判别需要依次计算FIRST集、FOLLOW集和SELLECT集,然后判断是否为LL(1)文法,最后再进行句子分析。
-LL (1) grammar using a set top-down analysis techniques. LL (1) the meaning is: the first one L shows a top-down analysis is a scan input string from left to right, the first two L shows the analysis process will be the most left-derivation, one that will be just right to see a sign can decide how to derive, choose what Production (rules) for derivation. LL (1) grammar, followed by calculation of the discriminant needs FIRST sets, FOLLOW sets and SELLECT set, and then determine whether to LL (1) grammar, the last sentence further analysis.
- 2023-02-02 20:20:03下载
- 积分：1
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本程序不能编译除大小写字母之外的编码
本程序需事先建立字母权值文后件才可运行
本程序从文件中读入文字，编译后写入文件，所以屏幕上不会直接出现答案...
本程序不能编译除大小写字母之外的编码
本程序需事先建立字母权值文后件才可运行
本程序从文件中读入文字，编译后写入文件，所以屏幕上不会直接出现答案-not build this program in addition to case-insensitive outside of the coding process required prior to the establishment of the letters after the value of the text pieces can Win OK this program read from the file into the text, compiled into the paper, not directly on the screen appeared the answer
- 2022-03-07 09:53:23下载
- 积分：1
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This an expression used to generate value for the procedures it can be imported...
这是一个用来生成表达工的值的程序 它可以输入8进制或十进制的数 建立一棵语法树 并返回表达式的值-This an expression used to generate value for the procedures it can be imported or 8 band of a few decimal establish a syntax tree and return to the value of the expression
- 2022-11-08 09:00:08下载
- 积分：1
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通过设计编制调试一个具体的词法分析程序，加深对词法分析原理的理解。并掌握在对程序设计语言源程序进行扫描过程中将其分解为各类单词的词法分析方法。...
通过设计编制调试一个具体的词法分析程序，加深对词法分析原理的理解。并掌握在对程序设计语言源程序进行扫描过程中将其分解为各类单词的词法分析方法。-Debugging through the design of the preparation of a specific lexical analysis process, deepen their understanding of the principles lexical analysis. And mastery of programming language source code to scan the process of its decomposition for different types of word lexical analysis.
- 2022-08-21 08:13:34下载
- 积分：1
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c―语言的词法分析器。将一个C
c―语言的词法分析器。将一个C--语言程序分割成token串的序列。处理C--语言的所有token类型。程序要做成命令行程序，带两个参数，分别表示输入和输出文件名。
-c-language lexical analyzer. A C language program is separated into token strings of sequences. C-treatment of all token types. Procedures to create command line process, with two parameters, respectively, express the input and output file names.
- 2022-10-07 07:50:04下载
- 积分：1
