编译原理的词法分析器!

这是一个用flex生成的计算器程序-This is a generation with flex the calculator program

计算所汉语词法分析系统ICTCLAS.分词正确率高达97.58%(973专家组评测)，未登录词识别召回率均高于90%，其中中国人名的识别召回率接近98%处理速度为31.5Kbytes/s。ICTCLAS的特色还在于：可以根据需要输出多个高概率结果，有多种输出格式，支持北大词性标注集，973专家组给出的词性标注集合。-Calculate the Chinese Lexical Analysis System ICTCLAS. Segmentation correct rate of 97.58 percent (973 Expert Group on Evaluation), the recall rate of identification of unknown words were higher than 90 percent, of which China s name to identify the recall rate of nearly 98 percent processing speed for 31.5Kbytes/s. Also features ICTCLAS is: can output a number of high probability that there are a variety of output formats, to support the North-of-speech tagging sets, 973 expert group is given a collection of-speech tagging.

词法分析器实现简单的词法分析词法分析 器实现简单的词法分析-Realize a simple lexical analyzer Lexical analyzer Lexical Analysis realize a simple lexical analysis

Java形式文法-BNF.是设计形式文法的好范例。-Java form grammar-BNF. Form design is a good example of grammar.

打开2.tab.c编译运行，a.txt为测试用的PL/0程序。 2.output中有所有的产生式和LALR分析表的所有状态。- Opens the 2.tab.c translation movement, a.txt is measures the test the PL/0 procedure. In 2.output has all production patterns and LALR analytical table all conditions.

学习简单的Yacc说明的原理，掌握Yacc源文件的写法以及语法分析器生成工具BISON的使用方法和Yacc源文件的运行方法和基本步骤。 -Yacc study shows a simple principle, Yacc master source file written syntax analyzer and generate UML tools and the use of the source language Yacc pieces of the operation and basic steps.

用C写的十分精巧的XML实现程序库，包括简单的示例程序-Using C to write very sophisticated realize XML library, including examples of simple procedures

物资管理系统 物资管理系统-Material Management System Mate rial Management System Materials Management System

Compile-CC编译器源代码.rar,是学习编译原理和C语言的好例子！-Compile-CC compiler source code. Rar, learning theory and compile C language a good example!

1、输入串应是词法分析的输出二元式序列，即某算术表达式“实验项目一”的输出结果。输出为输入串是否为该文法定义的算术表达式的判断结果。 2、LL(1)分析过程应能发现输入串出错。 3、设计两个测试用例（尽可能完备，正确和出错），并给出测试结果。 -1, input strings should be the output of lexical analysis of binary sequence, that is, the arithmetic expression of a