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

Shelby Hanna
Shelby Hanna
1,453 Points
Posted by Shelby Hanna
Shelby Hanna
1,453 Points

stuck in a while loop

I'm not sure how to complete this challenge. I'm trying to add the items in the array and assign them to the var sum. I got this far:

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

// Enter your code below while counter < numbers.count {

counter ++ }

It gives me an error when I try to use the + operator. Any hints welcome

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 {

  counter ++
}

1 Answer

Nawfal Cherkaoui
Nawfal Cherkaoui
14,539 Points

Try to delete the space between counter and ++ and it will work.

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

// Enter your code below
while counter <= numbers.count {
// adding each element in the array to the total sum
  sum += numbers[counter]
  counter++
}