这是编译原理词法分析源程序和实验报告。本程序亮点在于： 1、能够处理ANSI C 定义的42种运算符，32个关键字。 2、能够识别并且抽取预处理语句（如#include,#define ,#ifdef....)存到preprocess.log中（格式例子为：line 0 :#include<stdio.h>） 3、能够识别并剔除两种注释(//和/**/) 4、能够识别简单的词法错误 missing terminating " 并且告诉你是在第几行出的错。 5、能够识别浮点数，小数（譬如 123.23E+12)会被当作浮点数而不会被分开。 6、能够识别转义符’\’.测试程序是来自GCC的一个2000多行的程序。实验证明能够准确识别

lixminC\comment.h
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.......\constant.h
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.......\Debug\lex.exe
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.......\.....\lex.obj
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.......\.....\vc60.idb
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.......\identifier.h
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.......\in.txt
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.......\include.log
.......\keyword.h
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.......\keywords.log
.......\lex.c
.......\lex.dsp
.......\lex.dsw
.......\lex.ncb
.......\lex.opt
.......\lex.plg
.......\lex.positions
.......\operation.c
.......\operation.h
.......\operation.log
.......\out.txt
.......\output.h
.......\preprocess.h
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.......\preprocess.log
.......\sk.txt
.......\复件 keyword.h.bak
.......\实验报告.doc
.......\实验报告.pdf
.......\测试样例\2in.txt
.......\........\in.txt
.......\Debug
.......\测试样例
lixminC

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