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flex 是一个生成扫描器的工具,能够识别文本中的词法模式。flex 读入给定的输入文件,如果没有给定文件名的话,则从标准输入读取,从而获得一个关于需要生成的扫...
flex 是一个生成扫描器的工具,能够识别文本中的词法模式。flex 读入给定的输入文件,如果没有给定文件名的话,则从标准输入读取,从而获得一个关于需要生成的扫描器的描述。此描述叫做 规则,由正则表达式和 C 代码对组成。flex 的输出是一个 C 代码文件――lex.yy.c――其中定义了 yylex() 函数。编译输出文件并且和 -lfl 库链接生成一个可执行文件。当运行可执行文件的时候,它分析输入文件,为每一个正则表达式寻找匹配。当发现一个匹配时,它执行与此正则表达式相关的 C 代码-flex generated scanner is a tool that can identify lexical patterns in text. flex time into the given input file, in the absence of a given file name, then read from standard input, and thus on the need to generate a description of the scanner. This description is called the rules, by the regular expression and the composition of C code. the output of flex is a C code file- lex. yy.c-- which defines the yylex () function. Output file and compile and link-lfl library to generate an executable file. When running an executable file, it analyzes the input file, for each regular expression match to find. When they find a match, it is the implementation of regular expressions with the related C code
- 2022-07-16 02:04:28下载
- 积分:1
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c industrialized strengthen standards, to the benefit of reliability source
c++工业化强化标准,有利于源码的可靠性-c industrialized strengthen standards, to the benefit of reliability source
- 2022-01-22 04:18:06下载
- 积分:1
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C#编程100例源码,有好多例子呀,希望对学习C#的朋友有用,这是第三个包!20个...
C#编程100例源码,有好多例子呀,希望对学习C#的朋友有用,这是第三个包!20个-C# programming source of 100 cases, many examples of it, want to learn C# useful friends, This is the third package! 20
- 2022-05-01 00:42:50下载
- 积分:1
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开关电源设计中推荐的基本书籍,希望对大家有用
开关电源设计中推荐的基本书籍,希望对大家有用-source power
- 2022-03-05 11:31:01下载
- 积分:1
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learning powerbuilder9 good information, and this is a pb produced with a small...
学习powerbuilder9的好资料,这是一个用pb制作的一个小例子,配合powerbuilder9案例导航的一个章节.初学者适宜.-learning powerbuilder9 good information, and this is a pb produced with a small example, with powerbuilder9 case of a navigation sections. Suitable for beginners.
- 2022-09-12 21:05:03下载
- 积分:1
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tuxiangfangsuo 图像放缩功能
tuxiangfangsuo 图像放缩功能-tuxiangfangsuo Image Zooming function
- 2022-06-19 16:34:22下载
- 积分:1
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北大青鸟内部教程,很难得,我希望能提供给想要的人,多努力把,
这个是第二年下学期的教程...
北大青鸟内部教程,很难得,我希望能提供给想要的人,多努力把,
这个是第二年下学期的教程-Beida Jade Bird-house tutorials, it is difficult to get, I hope I have provided to those who want more and strive to, this is the second year of the curriculum next semester
- 2022-07-06 10:53:47下载
- 积分:1
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注册表的使用,修改,优化系统性能,一本初学注册表的很好的手册...
注册表的使用,修改,优化系统性能,一本初学注册表的很好的手册-registry use, modify and optimize system performance, a good beginner registry handbook
- 2022-09-16 19:35:03下载
- 积分:1
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吃豆子的游戏.非常好玩,截面精美
吃豆子的游戏.非常好玩,截面精美-eat beans game. Very fun, exquisite section.
- 2022-07-03 21:30:22下载
- 积分:1
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1.本书在MATLAB环境下实现了各类PID控制算法,具有很强的工程参考价值.
2、将光盘中的仿真程序复制到硬盘MATLAB运行的路径中,便可仿真运行。...
1.本书在MATLAB环境下实现了各类PID控制算法,具有很强的工程参考价值.
2、将光盘中的仿真程序复制到硬盘MATLAB运行的路径中,便可仿真运行。
3、本书算法在MATLAB 5.3版下运行成功,并适用于其他版本。
-1. This book has all kinds of MATLAB environment to achieve PID control algorithm, has a strong engineering reference value. 2, CD-ROM in the simulation program will be copied to the hard disk to run the path of MATLAB, the simulation can be run. 3, the book version of algorithm in MATLAB 5.3 running under success, and apply to other versions.
- 2022-04-17 00:52:21下载
- 积分:1