词法分析器的功能是输入源程序，输出单词符号。词法分析器的单词符号常常表示成以下的二元式(单词种别码，单词符号的属性值)。 识别保留字：if、int、for、WHILE、do、return、break、continue； 单词种别码为1。 其他的都识别为标识符；单词种别码为2。 常数为无符号整形数；单词种别码为3。 运算符包括：+、－、*、/、=、>、<、>=、<=、!= ； 单词种别码为4。 分隔符包括：,、 、{、}、(、)、【、】； 单词种别码为5。
上传时间： 2016-07-15
上传用户：aig85
This discussion will attempt to outline some truths and common misconceptions about digital audio watermarking. It will survey the intrinsic obstacles that such technology is required to overcome, shedding light on its performance criteria, compromises and limitations. WHILE doing so, it will also survey a few common types of applications, hopefully leading to a clear understanding as to the appropriateness of such technology and its expertise within multimedia content protection.
标签： misconceptions discussion attempt digital
上传时间： 2016-07-18
上传用户：520
在单片机上实现火灾警报的功能，程序采用WHILE循环来做实现
标签： 单片机
上传时间： 2016-07-26
上传用户：diets
不好意思，刚发的BianYiYuanLi为词法分析和语法分析，现在发的才是DO-WHILE循环语句的翻译程序设计（LL（1）法、输出三地址表示）
标签：
上传时间： 2016-08-01
上传用户：一诺88
The task of clustering Web sessions is to group Web sessions based on similarity and consists of maximizing the intra- group similarity WHILE minimizing the inter-group similarity． The first and foremost question needed to be considered in clustering W b sessions is how to measure the similarity between Web sessions．However．there are many shortcomings in traditiona1 measurements．This paper introduces a new method for measuring similarities between Web pages that takes into account not only the URL but also the viewing time of the visited web page．Yhen we give a new method to measure the similarity of Web sessions using sequence alignment and the similarity of W eb page access in detail Experiments have proved that our method is valid and e币cient．
标签： sessions clustering similarity Web
上传时间： 2014-01-11
上传用户：songrui
For developers using FPGAs for the implementation of floating-point DSP functions, one key challenge is how to decompose the computation algorithm into sequences of parallel hardware processes WHILE efficiently managing data flow through the parallel pipelines of these processes.
标签： floating-point implementation developers functions
上传时间： 2013-12-16
上传用户：tonyshao
If you d like to create web-based applications easily, then this book is for you. More importantly, it shows you how to do that with joy and feel good about your own work! You don t need to know servlet or JSP WHILE your productivity will be much higher than using servlet or JSP directly. This is possible because we re going to use a library called "Tapestry" that makes complicated stuff simple and elegant.
标签： applications importantly you web-based
上传时间： 2016-09-29
上传用户：宋桃子
This book is for you if You re no "dummy," and you need to get quickly up to speed in intermediate to advanced C++ You ve had some experience in C++ programming, but reading intermediate and advanced C++ books is slow-going You ve had an introductory C++ course, but you ve found that you still can t follow your colleagues when they re describing their C++ designs and code You re an experienced C or Java programmer, but you don t yet have the experience to develop nuanced C++ code and designs You re a C++ expert, and you re looking for an alternative to answering the same questions from your less-experienced colleagues over and over again C++ Common Knowledge covers essential but commonly misunderstood topics in C++ programming and design WHILE filtering out needless complexity in the discussion of each topic. What remains is a clear distillation of the essentials required for production C++ programming, presented in the author s trademark incisive, engaging style.
标签： intermediate you quickly dummy
上传时间： 2014-01-09
上传用户：wpwpwlxwlx
1. 本程序使用一个定时器和任意 2 个 I/O 口模拟一个串行口。 2. 1位起始位，8位数据位，1位停止位。发数据位时先发低位。 3. 支持半双工通讯。收、发波特率相同。 4. 应把定时器中断优先级设置为最高级。 5. 本程序每接收一个字节后就把它放到一个队列缓冲区中(也可使用环行缓冲区), 待缓冲区满后，将缓冲区中的内容原样发回。这是为了测试多字节连续收发的 能力和简化程序。实际应用中应防止缓冲区溢出。 6. 由接收转换到发送时要先调用 soft_send_enable ()； 由发送转换到接收时要先调用 soft_receive_enable ()。 7. 发送最后一个字节后如果要立刻转为接收，必须等待最后一个字节后发送完毕 WHILE ( rs_f_TI == 0) // 等待最后一个字节发送完毕
上传时间： 2016-10-22
上传用户：tonyshao
精致、漂亮、实用的日历选择代码，Calendar is a Javascript class that adds accessible and unobtrusive date-pickers to your form elements. This class is a compilation of many date-pickers I have implemented over the years and has been completely re-written for Mootools. I have tried to include all the features that have been most useful WHILE streamlining the class itself to keep it as small as possible. Use the links below to see what features are available in Calendar and how it might enhance the accessibility, usability and validation of form elements on your website.
标签： 代码
上传时间： 2014-01-04
上传用户：cc1
