How do I fill Number of Files?

Number of Files refers to how many files that the software you plan to develop will have to access. This only includes any data files that your software will have to interact with. This does not include header files, library files, or any files that your compiler will need to compile your software. From the software you plan to develop, decide how many data files that your software will need to have access to. In addition, try and rate those files as SIMPLE, AVERAGE, or COMPLEX.

For example, after examining your software you may decide that it will need to access with 10 data files. Out of those 10, you decide that 3 will be simple, 3 will be average, and 4 will be complex.