1 task while loop

Hey Nikola, I would recommend to write your loops in multiple lines, because it's easier to read and to understand.

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

Other than that I don't understand what's wrong with your code. It would be usefull if you could provide the exact error.

Personally I would also use a for-loop for this kind of operation, because there is not really a need for the counter variable. This could look like this:

for number in numbers {
    sum += number
}

Glad you figured it out :) But you only need the ";" if you want to write the condition all in one line (which is not so good style). I would preffer the more readable way and put it into multiple lines.

The ";" is just to separate two expressions from one another. In Swift this could also be done by a line break. Thats why you almost never need the ";" in Swift. But if you put two expressions (sum += numbers[counter]; counter += 1) in one line you have to separate them manually, because the compiler thinks that they are one expression, but could not evaluate it.

the task ask to use while loop, but i solve problem. i didnt put ";" the code should look like while counter < numbers.count { sum += numbers[counter]; counter += 1}

thank you anyway