Bout how long does it take to make a hack?

I'm wondering this not cuz i'm waiting! I want to know cuz i might try learning how to hack myself... i never really have much time on my pc and i hate to start something just to stop right in the middle of doing it. and what hack takes longest/shortest to make? the rest i'm gonna try to learn myself. Plz and ty for the info.

first you have to learn c++ which could take a while depending how good u are

ok. but do you know what hacks are easiest/hardest to make?