Introduction - If you have any usage issues, please Google them yourself
asked to perform the following functions : 1) to read from the screen of a student's information will be deposited into the data file. 2) can be designated information deleted from the document. 3), according to numbers, the names of the students will retrieve information retrieval results showed on the screen. 4) Statistical all students can be a total score, and the class rankings. 5) Statistics Branch to the average scores and passing rates. 6) require a functional error messages, such as sex between men and women can only import, importation of error messages to re-enter. 7) If less than the corresponding retrieval of information should prompt the user.