Why is the output 19?

Question

https://code.sololearn.com/cqM013SZoMsk/?ref=app

Please reply, its urgent.

Answer 1

i think I got it.
so the reason it is 19 and not 18 is that
first you i crement i so it is 5 now. so you are now with:
i = 5 + ++i + ++i;
but!!!
5 is still the variable i!
so if you incement the next 'i', this 5 is also incremented cause it is still 'i', so you end up with:
i = 6 + 6 + ++i
6 + 6 is a sum, so 12. 12 is no longer 'i', just a number. so after next incrementation, where i is equal to 7, you add 7 to the existing 12.
i = 12 + 7 which is 19!
or I may be wrong, but in my theorem it should work

Answer 2

thanks paul