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iOS Swift Functions and Optionals Optionals Review: Functions

Posted by Matthew Giuliano
Matthew Giuliano
2,749 Points

I'm stuck on this challenge and can't seem to get past the basic setting up of the code.

Thanks

divisible.swift 
func isDivisible(#dividend: Int, #divisor: Int) -> Bool {
    if dividend % divisor == 0 {
        return true
    } else {
        return false
    }
}
func isNotDivisble(#divedend: Int, #divisor: Int) -> Bool {
    if divisor % divedend == 0 {
        return true 
    } else {
        return false
    }
}

1 Answer

nolantenpas
nolantenpas
15,573 Points

Taking a brief look without context, it seems as if you forgot to check what the modulo operator returns.

% will basically give you the remainder if you took the number before and divided it by the number after the operator.

For the isNotDivisible function, I think you may want to check if the operator does NOT return 0. This would mean that a remainder would exist.

So basically the code for the isNotDivisible function should be about the same as the function before it, except you should change one line illustrated below.

What you have:

if divisor % divedend == 0

What it should be:

if dividend % divisor != 0

Also, in the code above, I changed your spelling of dividend. Be sure to update the parameter name as well.

Here is a good reference straight from Apple. Look for "Remainder Operator".

I hope this helps.

Matthew Giuliano
Matthew Giuliano
2,749 Points

It worked, thank you!