单独分离出来的C

代码说明：

单独分离出来的C-手工词法分析器，需要自己建立一个工程来运行本程序。为《编译原理与实践》一书之后的实验题的代码。-Single isolated C-hand lexical analyzer, needs its own to establish a project to run this program. For " Compiler Construction Principles and Practice," a book after the experiment of the code.