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

Posted by PRAVEEN EMANI
PRAVEEN EMANI
397 Points

In this task, we have an array of numbers and we want to compute the sum of its values.

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)

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{
    sum = sum + numbers[counter]
    counter++ }
Joe Hernandez
Joe Hernandez
5,699 Points
Joe Hernandez
Joe Hernandez
5,699 Points

I believe counter++ doesn't work. try counter+=1

I know in Java counter++ works.

robertrinca
robertrinca
Courses Plus Student 11,316 Points
robertrinca
robertrinca
Courses Plus Student 11,316 Points

Yeah, ++ was removed (deprecated) in Swift 3, so += 1 is your answer.

The other issue is that you need a space between < and numbers.count. (And mine as well throw a space after numbers.count)... I think it's trying to evaluate <numbers.count (with no space).

Hope that helps.

1 Answer

clintbarron
clintbarron
11,943 Points
clintbarron
clintbarron
11,943 Points

++ is now deprecated. Try:

counter+=1