Ugh

Question

I'm not understanding what the question is asking, so, derp. 
Challenge Task 2 of 2
Now that we have the while loop set up, it's time to compute the sum!
Using the value of counter as an index value, retrieve each value from the array and add it to the value of sum.
For example: sum = sum + newValue. Or you could use the compound addition operator sum += newValue where newValue is the value retrieved from the array.
https://teamtreehouse.com/library/swift-20-collections-and-control-flow/control-flow-with-loops/working-with-loops
```while.swift
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
while counter > 0 {
  print(sum)
  counter++
}
  sum = sum + numbers
```

Brendan Whiting · Accepted Answer

A couple things:
1) you want your while loop to go on for as many times as there are are items in ' numbers '.  Right now it's going to loop as long as counter is greater than 0, which is an infinite because you increment counter each time.  If we say as long as counter < numbers.length this will work out.
2) Inside the loop, we're going to add each item from numbers to the sum, one at a time, each time we loop through.  If we say sum += numbers[counter], the value of counter gets used as the index of the array, starting with 0.
```Swift
while counter < numbers.count { 
  sum += numbers[counter]
  counter++
}
```

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1 Answer

Brendan Whiting

Brendan Whiting

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Brendan Whiting

Brendan Whiting

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