What is the point of using x++? Why would you not just use x+1, if they have the same result?

Answer 1

x++ is not equivalent to x + 1, but to x = x + 1. So x++ is shorter.

Answer 2

because there's some distance. ++ is an one processor operation while += loads 1 at first and then performs addition.

Answer 3

Mirrors the fact that incrementing has a special machine instruction.