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说明：  ergydfhgdfhggfhg 一．实验目的 二．实验内容 三、程序简要说明 原 文 : C语言词法分析器的设计与实现 一．实验目的： 1．强化对系统软件综合工程实现能力、规划能力的训练； 2．加强对词法分析原理、方法和基本实现技术的理解； 二．实验内容： 用C语言(或 C++ )作为宿主语言完成： C语言(ANSI C或turbo C 2.0)词法分析器的设计和实现。 三、程序简要说明： 1、属性字说明： 共9种 KEYWORD: 关键字 "auto","break","case","char","const","continue", "default","do","double","else","enum","extern", "float","for","goto","if","int","long","register", "return","short","signed","sizeof","static","struct", "switch","typedef","union","unsigned","void", "volatile","while","include"，"define" 共34个 详见IsKeyWord（）函数 NUMBER： 数字 包括十进制整数，八进制整数，二进制整数，十六进制整数 还可返回几种错误 详见IsNumber（）函数 CONSTANT： 常量 宏定义标识符，不识别C++关键字const，简单处理一层宏定义。 详见IsDefined（）函数 ...... 关键词 : 计算机 编译原理 c语言 词法分析器
(ergydfhg gfhg one. Experiment 2. Experiment 3, procedures brief description of the original : C language lexical analyzer Design and Implementation of a. The experiment : 1. To strengthen the integrated system software engineering, planning capacity of training; 2. Lexical analysis on principle, and basic understanding of the technology; 2. Experiment : C (or C) as the host language completed : C language (ANSI C or Turbo C 2.0) lexical analyzer design and implementation. 3, brief description of procedures : 1, the word attribute : a total of nine species KEYWORD : keyword "auto" "break" and "case", "char", "const", "continue", "default", "do", "double", "else", "enum" "ext)