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

This question will be so easy for anyone who is second course on ios development please help and thank you for your time

Help please

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

1 Answer

Hi Rico,

There's a couple of points here. First, your condition is the wrong way round. You're asking it to loop while the value in counter is greater than the length of the array. The start value of counter is zero, so the loop will never run. Switch that test to seeing if counter is less than the length of numbers.

Next, inside the loop, you've incremented counter; that's essential!! You've also accessed numbers by using numbers[counter] - that's correct too. But you don't want to print it; you want to add it into sum. So change your code to sum += numbers[counter] and I think that'll pass the challenge.

I hope that helps,