Introduction - If you have any usage issues, please Google them yourself
Add function: programs can add different students records, providing choice interface for users to choose to add a category, requires only student number, if you add the repeat records of student id, add repeat and cancel add indicates that data.
(2) query function: according to the information such as student number, name of added student record query, if not found, gives the corresponding message, if found, displays the corresponding record information.
(3) display function: it can display the current system of all the students records, each record occupies one line.
(4) editing features: can be modified according to the records of the results of the query to the appropriate, when a change is pay attention to the uniqueness of student number.
(5) the delete function: the main implementation to delete already add student record. If there is no corresponding record in the current system, indicates that the record is empty! And return operation.
(6) statistical