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Start your free trialBrian Bellini
3,930 PointsGetting an error line of code in challenge and in Xcode using % operator.
Line of code is:
let result: Double = value % divisor
Xcode says: " % is unavailable: Use truncatingRemainder instead" Challenge says: "Make sure result is assigned result of operation not simply assigned an Int value.
// Enter your code below
let value: Double = 200
let divisor: Double = 5
let someOperation = 20 + 400 % 10 / 2 - 15
let anotherOperation = 52 * 27 % 200 / 2 + 5
// Task 1 - Enter your code below
let result: Double = value % divisor
// Task 2 - Enter your code below
let isPerfectMultiple: Bool = result == 0
1 Answer
Paul Jackson
7,585 PointsHi Brian,
That error occurs because an expression using the %(modulo) operator returns an integer and in your answer value and divisor are defined as type Double. Swift is telling you to use the truncatingRemainder function because you will lose precision going from Double to Int. To fix the issue simply remove the type Double or change the type to Int for value and ** divisor** and it should work fine.
let value = 200
let divisor = 5
Hope this helps. ?
Brian Bellini
3,930 PointsBrian Bellini
3,930 PointsThanks.