Write a program in C++ to: ead all records from a disk file (which will be emailed to you) to arrays, the record structure: name (20 bytes), grade (nteger) 2. Sort the list according to test scores 3. Calculate the average test score for the class and print on the screen 4. write sorted records to a new disk file. For example: The records in the original file: A. Smith 89 T.Phillip95 S. Long 76 The new file sorted by scores: S. Long A. Smith 76 89 Philli