这是个简单的语法分析器程序,输入一个表达式,会给出一个分析过程....

词法分析器 对输入的程序进行分析，将关键字，保留字与系统标识符分开，并对其属性进行说明。 建立数组，将单词读入，对单词的ASCII码进行判断，将在ASCII码值在一定区间进行区分（使用if语句来判断），分开来后，对其所在ASCII值区间的不同，给予以不同的属性(比如：系统保留字…），词法分析器完成后要能识别+,-,=等字符。-lexical analyzer on the importation procedures for analysis, keyword, the word reservation system with separate identifier, and a description of their attributes. The establishment of an array, you read the word, the right word ASCII judgment, in ASCII value in a certain area and distinguish between (use to determine if statements), separately, its value lies ASCII range of different, to give a different properties (such as : system retain the word ...), after the completion of a lexical analyzer to identify,-, =, etc. characters.

发一次，不知道不好，还是怎么了，欢迎指导。-a fat, do not know well, or how, welcomed the guidance.

1．词法分析 设计、编制并调试该C语言子集的词法分析程序，要求结果以二元组形式保存在文件中。-1. Lexical analysis design, develop and debug the C language subset of the lexical analysis procedure that requires results to binary form group to preserve the documents.

编译原理中ＰＬ／０程序的编译过程．用Ｃ写的-compiler principles of PL/0 procedures compile process. Written in C

take db programme now

编译原理的课程设计- The translation principle curriculum designs

输入已经消除左递归的以及提取公共左因子的LL(1)文法，再输入相应的表达式，若分析成功，则在递归输出过程中输出"acc",若不成功，则有相应的报错以及位置指名。注意，要把同一个非终结符的产生式分成单个输入。他会自动计算first,follow,预测分析表的构造，但并不输出。-importation has been eliminated and left recursive public from the left-LL (1) grammar, further importation of the corresponding expression, if the analysis is successful, the output of the recursive process output "belongs", if successful, there were errors and the corresponding location named. Attention, we should end with a non-escalation of production into a single input. He will be automatically calculated first, follow, and predicting and analyzing the table structure, but does not export.

shpf 1.9一个并行编译器，自动的将串行fortran程序转换成并行的mpi程序。-shpf 1.91 parallel compilers, are automatic transform the serial fortran procedure the parallel mpi procedure.

8237各个引脚的功能以及其应用 可以运用于课程设计-8237 different pin functions and their applications can be used in curriculum design

语义分析的功能： 第一，审查每个语法结构的静态语义，即验证语法结构合法的程序是否真正有意义。有时把这个工作称为静态语义分析或静态审查。第二，如果静态语义正确，语义处理则要执行真正的翻译，即，或者将源程序翻译成程序的一种中间表示形式（中间代码），或者将源程序翻译成目标代码。 有报告-Semantic analysis of the functions: First, review each of the grammatical structure of the static semantics, that is, the grammatical structure to verify whether the procedures legally meaningful. Sometimes this is called static or static semantic analysis review. Secondly, if the correct static semantics, semantic processing should be the implementation of a genuine translation, that is, or will be translated into procedures source an intermediate representation (intermediate code), or source code translated into object code. There are reports