自己写的红绿灯的例子！呵呵，面试之后回来写的，请大家参考指正！属于设计模式的练习，不知道选择ｗｉｎｄｏｗｓ其他小程序分类恰当否！应该归属于设计模式和数据结构类-Write their own examples of the traffic lights! Oh, come back to write after the interview, please refer to correct me! Design patterns are practicing, I do not know to c