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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
Posted by 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.

while.swift 
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 ++
print(sum)
}
Barbara Zeins
Barbara Zeins
900 Points
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
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 

counter++

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

counter += 1

Hope this helps

Regards

Simon

Barbara Zeins
Barbara Zeins
900 Points
Barbara Zeins
Barbara Zeins
900 Points

So helpful, thank you.