这是一个很好的C语言词法分析器，可以识别c的所有标示符，运算符，并将结果输出到文件中，并对错误进行提示-This is a very good C language lexical analyzer to identify all the indicators c, operator, and the results output to a file, and prompt errors

此为C语言的词法分析器，基本能识别标示符、数字、字母，运算符等-This is the C language, lexical analyzer, to identify the basic indicators, numbers, letters, and other operators