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iOS Swift Functions and Optionals Optionals Review: Functions

Munir Niaz
Munir Niaz
1,831 Points

Please Help

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
    }
}

1 Answer

Tobias Helmrich
Tobias Helmrich
31,602 Points

Hey Munir,

for this challenge you can basically copy the isDivisible function, change its name to isNotDivisible and then just change the is equal operator (==) to the is not equal operator (!=). That way the return value will be true when the dividend is not divisible by the divisor because there will be a remainder.

Like so:

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
    } else {
        return false
    }
}

I hope that helps! :)