Identify the functional units (i.e., external input, external output, external inquiry, internal logical files, and external interface file) for the following functionality to determine their contribution to the unadjusted function point count.

Please solve and show steps, work, and information related to this problem. Thank you.  The following C++ code performs a set of various arithmetic operations using both pointers and references: Fill in a memory table that shows the final values for both function a and function b. Indicate the final values of each parameter, passed in variable(s), and the return value of the function.   Provide a separate copy of this memory table for each function.

4. What does this function return? Which principle does it illustrate?