Can anyone let me know this program is using particle system or not. Thanks 
http://www.sulaco.co.za/opengl_project_water_ripples.htm
No, it doesn’t use particle systems.
But you already have source code.
Ya, i have code already… It really did not use particle system?? i think it’s using particle…
If you have the source code, and you “think” it uses some kind of particle system, why are you asking the question? 
Can you point out the line in the source you think a particle system is used?
i “think” it uses particle system because of my teacher told me before and i am not sure. That’s why i am asking here… Thanks in advanced~
If your teacher gave you the task, than you have to solve it on your own. 
The first step is to understand what the particle systems are.
In that code you have just a deformed quad-based surface.
Can it be a particle system? (Of course PS usually have quad-based emitters, but also have particles.)
To all those students coming to OpenGL to ask the community to do their homework for them. Please re-read the rules of the board:
http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=boardrules&v=1
Go straight to point 4 if you don’t have time, are too tired, too busy with (girl|boy)friend, too hungover, have a party to go too etc.