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# In this task, we have an array of numbers and we want to compute the sum of its values.

In this task, we have an array of numbers and we want to compute the sum of its values.

We have a variable ,sum, that will store the value of the sum of numbers from the array.

We also have a variable ,counter, which we will use to track the number of iterations of the while loop.

Step 1: Create a while loop. The while loop should continue as long as the value of counter is less than the number of items in the array. (Hint: You can get that number by using the count property)

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

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

I believe counter++ doesn't work. try counter+=1

I know in Java counter++ works.

Yeah, ++ was removed (deprecated) in Swift 3, so += 1 is your answer.

The other issue is that you need a space between < and numbers.count. (And mine as well throw a space after numbers.count)... I think it's trying to evaluate <numbers.count (with no space).

Hope that helps.