create a grading system described on 3

In this assignment you are free to program a topic that you will choose. You program should have at least the following to qualify for full mark: 1.3 major classes, either there must be multiple inheritance or templates in one of them. You may need and can add additional classes 2. Each major class should at least have a few data members, 10 functions and all necessary constructors and operators. Use explicit, const, override keywords as necessary 3. You program should not ask a lot of input, but should have a menu. Read the initial data from files. For instance, if you are writing a grading application, read data from the file to start with students and grades already entered. Then allow me to add/remove and add additional functionality like list/sort/search 4. You must use at least 5 STL algorithms. You must use algorithms when it is necessary. 5. You should break your classes into multiple files properly. If necessary watch our lectures again to find out how