可以采用正则表达式来实现字符串匹配功能。一种简单的正则表达式是由英文字母（区分大小写）、数字及通配符"*"和"?"任意组合而成的。"?"代表任意一个字符，"*"代表零个或任意多个字符。例如，a*b可以匹配acb,aabb,afdfdb,ab等，但不可以匹配ac,bb,abbc；a?b可以匹配acb，abb，但不可以匹配ab，accb。试编写一个程序，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。



查询的字典文件为test.txt，可以自己修改-Regular expressions can be used to implement string matching capabilities. A simple regular expression from the English letters (case sensitive), numbers and wildcard "*"　and, " ?"　Arbitrary combination. " ?"　Represents any one character, "*"　represents zero or any number of characters. Example, a* b match acb, aabb, afdfdb, ab and so on, but not match the ac, bb, abbc　a? B can match acb, abb, but not match ab, accb. Try to write a program read from a file into the N string, and then read from the keyboard, on a line with any of the rules of regular expressions, such as: " a? Bb* d" , the output in line with regular expression string. Query dictionary file test.txt, you can modify their own