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

Posted by Mark Fox
Mark Fox
1,893 Points

Nothing works

I am stuck in this challenge. I copy pasted solution for the first task and it doesn't work. Please help.

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 {
      sum += numbers[counter]
      counter++
}

1 Answer

Jennifer Nordell
seal-mask
STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi Mark! The pre and post increment/decrement operators ( ++ / -- ) were deprecated in Swift 2 and removed completely in Swift 3. Instead you should be using:

counter += 1

Hope this helps! :sparkles:

Mark Fox
Mark Fox
1,893 Points

Thank you for your answer. It works :)