PLL simulating using CPPSIM (with C++ code)

Hello, It's my first time to write question in this site.
I'm student in south korea, and because of my pool ENG, maybe You couldn't understand my Question properly
So, please question to me what I'm saying

Anyway, I'm working on my PLL simulation with CPPSIM (Prof. Michael Perrott's)
There's some kind block and simulator will be make c++ code (I mean Block --> C++ code to operate simulation)

But I wonder Appendix A ( FOR Integer N PLL)
In the manual - CppSim Reference Manual (Version 5) - Appendix A. Some Code for Interger N PLL

I don't know how to make simulation Result with this code.
I just think < schematic block(In sue2) to c++ code>
But this is just code, not the block, Right?

So I just want to ask How to get result from Appendix A
Maybe I use Matlab? or any other simulator? or just Sue2 simulator will be okay?

I really need your help.
Thank you for reading