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

amber razzouk
amber razzouk
1,391 Points
Posted by amber razzouk
amber razzouk
1,391 Points

Working with a while loop

I'm stuck on what the body of the code should be. Here is the question,

"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)"

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

// Enter your code below

while counter <= {
sum + number
}

1 Answer

Everton Carneiro
Everton Carneiro
15,994 Points
Everton Carneiro
Everton Carneiro
15,994 Points

There's a couple of erros in your code. First, in this line you should compare counter with the numbers of elements in the array minus 1 (to avoid index out of bounds error):

while counter <= numbers.count-1 {
}

Second, you need to access the elements of the array using the counter as index: sum = sum + numbers[counter] or just sum += number[counter]. 

while counter <= numbers.count-1{
    sum += numbers[counter]
}

Finally, you need update the counter in order to reach our condition, otherwise will become an infinite loop.

while counter <= numbers.count-1{
    sum += numbers[counter]
    counter += 1
}