You have to design a system for grade adding, deleting, sorting, calculating, and searching by teachers and students. First of all, you need a File I/O to save/read data. Second, you have to program a user interface for users to log in/out and choose the functionalities with user account and the password. For the security concern, the password should be hidden and replaced by the symbol “*”. In this system, teachers have the full accessibility for the grade system. 1. Teachers can create, add, or delete the teachers, subjects and students. 2. Teachers can know the average score of the students/subjects, standard deviation of the subject. In addition, sorting the place of the average/individual score of the students and sorting the place of the subjects is required. 3. Teachers should be able to search and know the grade of the particular subject or student. 4. Teacher can modify all of the data in the system. The functionalities for the students are shown their own grade, place, the average of all students and the average of each subject. The score of the Final Project is as follows: 1. File I/O 2. User interface: users log in/out, list of functions 3. Creating, adding, deleting and modifying teachers, subjects and students 4. Functions: average, standard deviation, sort, search and display 5. data access 友档案的可以寄站内信给我吗? --

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