optional exercise4答案，比较详细

编译原理程序by me.- Translation principle procedure by me.

regex-spencer-3.8-src.zip

简单的使用mfc开发的程序。- Simple use mfc develops procedure.

LL(1).rar

一个用C语言写的词法分析程序，输入所给文法的源程序字符串，输出二元组构成的序列。附有实验报告-Using C language to write a lexical analysis program, enter the source string to the grammar, the output sequence of binary units. With the experimental report

示范利用 Delphi 制作 BASIC 程序语言解释器- The demonstration manufactures the BASIC program language interpreter using Delphi

编译原理 词法分析器 识别标识符，关键字，运算符，常量，界符包括出错处理-compiler theory lexical analyzer identification identifiers, keywords, Operators, constants, and address sector including error handling

简单的词法分析器,真的很简单,优点是容易看懂,适合于初学者-simple lexical analyzer, it is really simple, easy to understand advantage is suitable for beginners

希望可以帮助同学在编译原理上有有更多的理解!- The hope may help the schoolmate in the translation principle has more understanding!

C编译器源码是我到处找来的,看了之后很有收获-C compiler source is found everywhere, and found the great harvest