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iOS Swift Functions and Optionals Optionals Review: Functions

Jan Francírek
Jan Francírek
1,766 Points

Again a mistake somewhere :(

Given the isDivisible function, create another function called isNotDivisible which also takes in two parameters, namely the dividend and the divisor. It should also return a Bool. The goal of this new function is to let you know whether a dividend is NOT divisible by the divisor. (Note: the function should return only a Bool and not an optional.)

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 "NotDivisible"
  }
}

6 Answers

It looks like your isNotDivisible function needs to return a bool and you are returning a string

Currently, it looks like you're returning a string from the isNotDivisible function, not a boolean. Look at the isDivisible function; it's always returning booleans. How can/should you make your function return booleans?

Kevin Hamil
Kevin Hamil
8,203 Points

Your "isNotDivisible" function is expecting a bool value to be returned, but you're returning a string "NotDivisible". It should instead return true.

Jan Francírek
Jan Francírek
1,766 Points

and what would be a right answer then ? Thank you

Kevin Hamil
Kevin Hamil
8,203 Points
func isNotDivisible(#dividend: Int, #divisor: Int) -> Bool {
    if dividend % divisor != 0 {
        return true
    } else {
        return false
    }
}
Murat KAYA
Murat KAYA
10,127 Points

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