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iOS Swift 2.0 Collections and Control Flow Control Flow With Conditional Statements Working with Logical Operators

Paul Je
Paul Je
4,435 Points
Posted by Paul Je
Paul Je
4,435 Points

Don't know what I did wrong!

Not sure which part is wrong - every bit makes sense on my own end lol. Any help would be sincerely appreciated

logicalOperators.swift 
var results: [Int] = []

for n in 1...100 {
    // Enter your code below
    if n % 3 = 0 && n % 7 = 0 
        results.append(n)
    }

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi Paul,

I think we've covered this in a couple of other posts, but to clarify, the explanation is in this post; do let me know if you're still having problems.

I don't understand the 'comparison to 3' mod thing; I have to confess. I don't understand what 3 has to do with odd or even checking. As in my other post, 7 % 3 does not equal zero but 7 is odd; 9 % 3 is equal to zero, but 9 is odd.

So, that aside, you want to check for zero remainders using the % operator using not-2 (i.e. is odd) and 7. That means the number is divisible by not-2 and/or 7. The output of both those operations needs to be equal:

n % 2 != 0 && n % 7 == 0

Make sense?

Steve.