编写一个C语言的子集的词法分析程序，对C语言源代码程序进行扫描，识别简单语言的基本字、标识符、无符号整数、运算符和界符等单词符号，产生的单词转换成特别码表示，-The preparation of a C language subset of the lexical analysis of C language source code program to scan, identify simple language the basic words, identifiers, unsigned integers, operator and the community at the word symbols, etc., have a word into the special code that