Preincrement faster than postincrement in C++ - true? If yes, why is it?

Question

(This question already has answers here): question from:https://stackoverflow.com/questions/2020184/preincrement-faster-than-postincrement-in-c-true-if-yes-why-is-it

Answer 1

Post-increment usually involves keeping a copy of the previous value around and adds a little extra code. Pre-increment simply does it's job and gets out of the way. I typically pre-increment unless the semantics would change and post-increment is actually necessary.