Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

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

qifeng sun
qifeng sun
6,274 Points

Not really sure why this code is not working

Title

loops.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
  sum = sum + numbers
  }

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points

You are close on this one

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

// Enter your code below

while counter < numbers.count {

sum += numbers[counter]

counter += 1

}
qifeng sun
qifeng sun
6,274 Points

It works!! thank you so much!!