Libraries Files question

MAC OS X 10.6.8
I want to view the files in the librarie (.cpp).
I tried removing the hidden files default to make all visible and I can see hidden files.
At one time I manage to see all arduino files that appear on the import library on the SDK, however I can't do it again!!!
I know the files are there, I've seen it, just can't do it again.
Please Help!!! Thanks

I could not able to understand question Here.

The Library file of arduino directly accessible. You Need to go to folder where arduino being installed, Check for library folder . Open your required CPP file.
You need to instal Devc++ or visual studio