How sum += i , right answer 16?

Question

i = 8, sum = 0

Answer 1

If you iterate that statement twice, sum will be 16.

Answer 2

Please post the complete code, otherwise nobody can know what you are talking about

Answer 3

if sum += i happens, sum will be 8

Answer 4

No, if you did that you would have -8

Answer 5

If answer is 16 then you have to put - sign at place of +

Answer 6

did they say you were supposed to loop twice?