C and OpenGL

Hi
I am studying C++ and OpenGL I have a workshop questions and it solutions.
I have a good understanding of OO and Java but a bit fogy when it comes to C and C++.
What I need is from you is to look at the solution and change the code to make it a new one, meaning it has to run and do the same thing but look different. Then explain it to me.

look at only the (raaComputerGraphicsAssignment1) folder we are going to work on the following files:
• planet.cpp
• planet.h
• source.cpp
• solarSystem.cpp
• solarSystem.h
Think of simplifying the functions changing the name of the variables to more meaningful name and splitting the header file in planet.h .