c语言写的VB编译器

c语言分析器。读入一个C语言程序以确定该程序不是合法的C语言程序。如果程序有语法和语义错误，请给出错误消息。至少要处理以下错误：（1）所有的语法错误。C-语法，见C-文档（2）语义错误：

编译原理课程设计 SLR(1)语法分析!我做的，就是没有运行结果，大家先用着-Course Design Compiler Principle SLR (1) syntax analysis! I do, is not running, we used to first

这是我们老师留的作业，还算不错我给完成了，希望给想做的朋友一点启发

简单介绍一下，整个工程分为5个文件：Main.c ----- 程序的入口点，其实很简单，就是调用两个函数。Global.h ----- 定义了一些全局变量及宏Parse.h ----- 语法分析器的主要算法Prece.h ----- 定义和实现了一些关于优先级的操作Stack.h ----- 定义和实现了一个栈及其操作编译的时候只要用TC2.0或者WinTC打开Main.c文件进行编译就好了。如发现有Bug请在这里贴出来或者把修改后的代码跟帖在这里:)总之，这个工程仅仅是一个简单示例，告诉大家怎么样把课堂上学到的知识运用到实际编程当中去，工程中所用到的模块化思想，数据结构等知识都是大家学过的，大三了，希望大家在最后这段时间里把写程序的本领练就出来。:)-brief introduction, the entire project is divided into five documents : Main.c----- procedure entry point, it is actually very simple, it is called two functions. Global.h----- definition of global variables and Wang Parse.h----- parser the main algorithm Prece.h----- definition and realization of a number of priority the operation Stack.h----- the definition and implementation of a stack and operation of the compiler used whenever WITH TC 2.0 or WinTC open Main.c documents compiled enough. If found please Bug out here or affixed to amend the code of Columbia here :) Overall, the project is just a simple example, like to tell you how to put classroom knowledge

(1)构造文法G的LR(0)项目 (2)构造文法G的LR(0)项目集规范族及识别活前缀的DFA (3)证明文法G不是LR(0)文法而是SLR(1)文法，并构造SLR(1)分析表 (4)设计LR语法分析程序，且能输出分析过程 (5)列举两个例子测试语法分析程序（识别失败一例，识别成功一例，后者推导步骤不得少于10步） -(1) construct grammar G of the LR (0) item (2) construct grammar G of the LR (0) item sets standards and identification of family living prefix DFA (3) prove that the grammar G is not LR (0) grammar, but the SLR (1 ) grammar, and constructs SLR (1) analysis table (4) design LR parser, and can output analysis process (5) cited two examples of parsing test procedures (identification fails an example, identify the success of a case, the latter shall not be derived step Less than 10 steps)

一款拥有一定历史的C语言编译器，最初为MOTOROLA 68000 开发，后来为其他一些通用处理器实现了后端，支持C99中的大部分新特性。-has some history of C language compiler, originally developed for Motorola 68000, Later, some of the other processor to achieve a common back-end, the C99 support most of the new properties.

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.

语法分析器词法分析器-Parser lexical analyzer

比较简单的一个词法分析器，帮助学编译原理的初学者理解，可作为教学用途-relatively simple one lexical analyzer to help the school build understanding of the principle of beginners can use as a teaching

通过对文档infile的读入 输出outfile的文件,outfile将infile中的编译语句分类组织-of the document infile outfile read into output documents, infile outfile to compile the statement classification