Will minecraft give you a virus?

No u idiot. Its like the top game of all time

Nope, the only way you can get a virus from Minecraft is if you get fooled by someone into downloading something you're not supposed to, otherwise, you should be sure you're buying and downloading it from a legitimate source to avoid scams and viruses

Buy the game legitimately, and no.

It's when you try to pirate the game where you can download something that isn't the real game, but something pretending to be (or it be the real game with malware added to it).

Yes. What are these people saying? If you play multiplayer your mind will become infected and you will become a kid due to the high concentration in children.