Why the output is 4 in both b and b++? I am not able to understand this. Kindly help.

Question

https://code.sololearn.com/cLkwFC2Z0vl4/?ref=app

Answer 1

because it prints b first, then adds 1 to it. Try ++b.

Answer 2

++b is pre-incrementing (add first, do stuff later)
b++ is post-incrementing (do stuff first, add later)