Can we use void main?

Answer 1

on the website of the author of c++ it's said in the FAQ that void main is not c++. So the best is to avoid it, even if some compilers allow that, it is not standard...
A program should return 0 when everything gas been done with success and an other int value to refer an error code when something got wrong.

source : http://www.stroustrup.com/bs_faq2.html#void-main

Answer 2

You can but not here. To be honest, you shouldn't. So it's not *perfectly* fine. It's fine from a formal perspective as some compilers accept it. Still, I would consider this a bad practice in any real-life software.

Answer 3

Yes you can, they just used int here because they return 0, void is perfectly fine.

Answer 4

yes

Answer 5

yes