1、编译原理的词法分析 2、根据输入的文件，对文件里的数据进行词法分析。 3、将分析结果保存到指定的TXT文件中-1, Compilation Principle 2 of the lexical analysis, according to documents entered on the document data lexical analysis. 3, will be the results of the analysis is saved to the specified TX