说明：  这个设计就是根据分支情况进行区分，并用一个wrongcount进行错误密码次数控制，我下面的代码结构和你原来的有些不同，但是完成了你的附加要求，你可以再修改～
(The design is based on a distinction between a branch condition, and the error code with a number of wrongcount control, I code structure and following your original is somewhat different, but the completion of your additional requirements, you can then modify the ~)