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iOS Swift Functions and Optionals Optionals Review: Functions

wajid abid
PLUS
wajid abid
Courses Plus Student 1,803 Points

where is the problem in my code

i think i am doing everything fine thanks

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



func isNotDivisible(#dividend: Int, #divisor: Int) -> Bool {
    if dividend % divisor == 0 {
        return true
    }
     return false
}

2 Answers

The algorithm for isDivisible and isNotDivisible seem to be exactly the same. Just by the name of the function I believe they should be opposites. Therefore try flipping the return values around in the isNotDivisible function.

if dividend % divisor == 0 {
   return false; // Switch from true to false
}
return true; // Switch from false to true
Dennis Parussini
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Dennis Parussini
Treehouse Project Reviewer

You can also use the != operator.

func isNotDivisible(#dividend: Int, #divisor: Int) -> Bool {
    if dividend % divisor != 0 {
        return true
    }
     return false
}