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iOS Swift 2.0 Collections and Control Flow Control Flow With Loops Working with Loops

Barbara Zeins
Barbara Zeins
900 Points

For...While Question

Hi, this code worked in a playground, I am unclear as to why it is not an acceptable answer or what a better one would be.

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

// Enter your code below
while counter <= numbers.count -1 {
sum = sum + numbers[counter]
counter ++
Barbara Zeins
Barbara Zeins
900 Points

Ah! So. It is the little things, isn't it. Thanks so much, I did not pick up on this and appreciate your help. : - )

1 Answer

Simon Di Giovanni
Simon Di Giovanni
8,429 Points

Hi Barbara

There is only one tiny problem with your code..

You have a space between counter & ++ e.g

counter ++ 

Correct syntax is


NOTE***** the ++ operator no longer exists in Swift 3. It has been replaced with '+= 1'. So you would write

counter += 1

Hope this helps



Barbara Zeins
Barbara Zeins
900 Points

So helpful, thank you.