从正则表达式到有穷自动机实例

想研究透彻正则表达式，必须知道有穷自动机的原理，这个源码可以给你一个很好的示例参考。编译后程序会生成一个可执行文件，运行这个文件出来一个DOS窗口，然后按提示输入正则表达式。

-From regular expressions to DFA thorough study of examples like regular expressions, we must know the principles of DFA, this source can give you a good reference sample. Compiled program generates an executable file, run this file from a DOS window, then prompted to enter a regular expression.