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# Stuck on While Counter

Stuck on Challenge for while and sum of the while loop. Not too sure of how to terminate without crashing as it keeps calculating. Not too sure of what I am doing wrong. Was wondering if anyone had any insight.

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)

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.

Thanks!

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

while counter < numbers.count {
numbers[counter]
sum += 0
}
```

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

while counter < numbers.count {

sum += numbers[counter]
counter += 1

}
```

• So you don't create an infinite loop you will want to increase `counter` inside the loop
• `numbers[counter]` gives you the values that you want to sum. Use this with `sum +=`