C++ Question

For this question, I need to create a makefile.

In a program called "average.hpp" create a function called sum. The function takes on an int parameter that says how many scores were submitted. This function returns a double.

In a program called "average.cpp" create a function definition for sum. The function takes the integer value passed as a parameter, and a loop reads the users input values and sums them. The total sum should be returned.

Please don't just give code fragment, make sure these will both run.

This is more basic programming so please keep it simple and use things like:

namespace std, use cout/cin instead of printf, and please leave simple comments explaining what you're doing in the code. Please just label if the code goes to the .hpp or .ccp, since you can't send files on here.