## 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!

### 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###### Chris Guyton

972 Points# I don't understand how to pass this task

Task 2 of 2 asks: Now that we have the while loop set up, it's time to compute the sum! Using the value of counter as an index value, retrieve each value from the array and add it to the value of sum.

For example: sum = sum + newValue. Or you could use the compound addition operator sum += newValue where newValue is the value retrieved from the array.

// Code provided

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

// I passed the first part with this piece of code // Enter your code below while counter <= 0 { // < ---- I passed the first part with this piece of code print("sum") counter += 9 }

while counter > numbers.count { sum = sum + numbers[counter] counter ++ // <---- This is my second piece of code after looking through help... no luck }

This is really frustrating, I can't get a pass no matter what. Is this for real?

```
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
while counter <= 0 {
print("sum")
counter += 9
}
while counter > numbers.count {
sum = sum + numbers[counter]
counter ++
}
```

## 4 Answers

###### Jeff McDivitt

23,970 PointsHi Chris - The answer is below

while counter < numbers.count { sum += numbers[counter] counter += 1 }

###### Chris Guyton

972 PointsJeff, that solution isn't working.

###### Chris Guyton

972 PointsNow it's working, nvm! Thanks!

###### Kyle Johnson

33,528 PointsThis will complete both steps of the challenge!

```
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
while counter < numbers.count {
sum += numbers[counter]
counter += 1
}
```