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iOS Swift Functions and Optionals Optionals Exercise: isDivisible function

anuj agrawal
anuj agrawal
1,782 Points

Why is there nothing on the console in this case?

I have the following:

func isDivisible (#Number1: Int, #Number2: Int) -> Bool? { if Number1 % Number2 == 0 { return true } else { return nil } }

if let result = isDivisible(Number1: 15, Number2: 4) { if result == true { println ("Is Divisible") }

else {
    println ("Not Divisible")
}

}

In the case of divisible nos. (say 15,5) it prints "Is Divisible" but isn't working for not divisible like 15,4

1 Answer

Stepan Ulyanin
Stepan Ulyanin
11,318 Points

Hi, try:

func isDivisible (#Number1: Int, #Number2: Int) -> Bool? { 
  if Number1 % Number2 == 0 { 
    return true 
  } else { 
    return nil 
  } 
}

if let result = isDivisible(Number1: 15, Number2: 4)  { 
     println("Is Divisible")
} else {
    println ("Not Divisible")
}

Also you should name your parameters number1 and number2 by common convention.