词法分析器运用软件 词法分析是编译的第一个阶段，它的主要任务是从左到右逐个字符地对源程序进行扫描，产生一个个单词序列，用以语法分析-lexical analyzer used lexical analysis software is a compiler of the first stage, its main task is to whatever individual characters to the source scan generated a sequence of words

用c++编写的一个简单的语义、语法和词法分析器，通过测试，附带实验报告-Using c++ to write a simple semantics, syntax and lexical analyzer, through testing, with test report