用lex ,flex 语言实现在c,c++源代码中inlcude 所包括的文件名及其深度递归搜索。-With lex, flex language in c, c++ source code included inlcude the file name and its depth of recursive search.

Flex example. Count number of words, phrases, differents words, words average per phrases and lexical density.

《flex与bison》被期待已久，是经典O’Reilly系列书籍《lex & yacc》的续篇。在原书出版以来的近20年中，flex和bison已被证明比原来的Unix工具更可靠、更强大-"Flex and bison" long-awaited, is classic O Reilly series of books "lex & yacc" sequel. In the original book was published nearly 20 years since, flex, and