please add .cpp, .main and .h file in c++

Create a program to calculate grades as well as descriptive statistics for a set of test scores. The test scores can be entered via a user prompt or through an external file. For each student, you need to provide a student name (string) and a test score (float). The program will do the followings: - Assign a grade (A, B, C, D, or F) based on a student's test score. - Display the grade roster as shown below: - Calculate the following descriptive statistics (as shown below) Number of students in the class Average score Maximum score Minimum score ================ Class Statistics ======= Mumber of students in the class: 3 Class Auerage: 94.3333 laximum Test Score: 100 Iinimun Test Score: 90 The program must use A loop structure (for-loop, while-loop, or do-while-loop) Conditional processing (if-then-else) Arrays or vectors The assignment (.cpp and .h files) must be submitted through the John Jay College blackboard