Which one is faster? A class function or a function with class pointer?

Rather than speed the deciding factor should be whether the function logically belongs to the class or not. If yes make it a member. If not make it a free standing function.

I second the answer given by Alok save and I have to reiterate a statement from Donald Knuth (he's famous, so the statement must be true, obviously...).

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.