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

Mika Kiela
Mika Kiela
2,178 Points

Some help needed with task 2 of loops..

I have no idea what I should do in this task. Any help?

The task: "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."

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

// Enter your code below
while counter <= 7 {
      counter += 1
}
Jonathan Ruiz
Jonathan Ruiz
2,998 Points

In the while loop your checking if the counter is less than 7 which is the number of integers but Arrays start at 0 so there is really 6 index values. You need to use dot notation and count.

while counter < numbers.count {

    sum = sum + numbers[counter]
    counter += 1
}

print(sum)

1 Answer

Mika Kiela
Mika Kiela
2,178 Points

Okay I got it work! Thanks Jonathan!