Your friend has asked you to help them with a project. He needs to calculate his grades, but is finding it difficult to operate a calculator. Create a program which will accept an unlimited number of scores and calculates the average score. You will also need to prompt for the total points possible. Assume each test is worth 100 points.

requirments:

Enter the Student ID first, then prompt for grades. Keep prompting for grades until the client enters calc. That triggers final processing. Make you code as reliable as possible. Make your program output easy to read. You cannot use anything from the standard template library. Use functions whenever possible to modularize your code. Use function prototypes and code the functions under main(). Style guide elements apply: comments, layout, Program Greeting, Source File Header, and variables etc. etc.

Note: answer in C++ please.