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

Ahmed Soliman
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Ahmed Soliman
iOS Development Techdegree Student 791 Points
Posted by Ahmed Soliman
.a{fill-rule:evenodd;}techdegree
Ahmed Soliman
iOS Development Techdegree Student 791 Points

I can't calculate the value of sum.

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

while counter < numbers.count {
    print()
    counter += 1
}

1 Answer

Zach Hudson
Zach Hudson
7,702 Points
Zach Hudson
Zach Hudson
7,702 Points

You have the while loop working, however you have to use sum and newValue to add each item in the array together. You are missing the addition part of the while loop. See the hint from the Code Challenge below:

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.*```