Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift Collections and Control Flow Control Flow With Loops Working With Loops

Alahjah Green
Alahjah Green
791 Points

Need Some Help with this question. Please Help

Having a hard time getting pass this question

loops.swift
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0

// Enter your code below


while counter < numbers.count{

        counter += 1

            sum += numbers[counter]

}

1 Answer

Heidi Puk Hermann
Heidi Puk Hermann
33,366 Points

Hi,

your issue is that you increment the counter before adding up the sum. This will return a sum, where the first value in number has been excluded.

All you should do is move the increment of the counter down as the last line in the loop, then your code works.