从文件中读入N个字符串，再从键盘上读入任意一个合乎规则的正则表达式，例如：“a?bb*d”，输出符合正则表达式的字符串。-Read from a file into N-string, and then read from the keyboard out of any of the rules of regular expressions such as: " a? Bb* d" , output match a regular expression string.