词法分析程序 程序当前目录里自己建立一个文本文档，取名为infile.txt,所有需要分析的程序都写在此文本文档里，程序的结尾以"@"标志符结束。运行词法分析程...

代码说明：

词法分析程序 程序当前目录里自己建立一个文本文档，取名为infile.txt,所有需要分析的程序都写在此文本文档里，程序的结尾以"@"标志符结束。运行词法分析程序，程序结果输出到文件名为outfile.txt的文件中,此文件为自动生成。-lexical analysis Procedure current directory to establish his own version of a document, named infile.txt, all need to analyze the procedures are written in the article of this document, at the end of procedures to "@" signs Fu end. Running lexical analysis procedure, the results of the proceedings output to a file called outfile.txt document, this document is generated automatically.