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iOS Swift 2.0 Basics Swift Operators Working With Operators

Remainder

Not sure why this isn't working. In lessons, there was no mention of putting a semicolon, but in Editor, it says a semicolon is required? Also, Editor says "v" in value and "d" in divisor is wrong, not sure what that means.

Challenge Task 1 of 2

For the first task, we're going to keep it pretty simple and check if we know how to use the reminder and equality operators.

In the editor below, you have two constants - value and divisor. Step 1: Using the remainder operator, compute the remainder given the value and a divisor. Assign this value to a constant named result.

Step 2: When value obtained using a remainder operator is 0, this means that the value is a perfect multiple of the divisor. Compare the value of result to 0 using the equality operator and assign the resulting value to a constant named isPerfectMultiple.

Submit your answer after you've completed both steps 1 and 2. /Users/mattconway/Desktop/Screen Shot 2016-01-08 at 11.07.00 AM.png

operators.swift
// Enter your code below
let value = 200
let divisor = 5

let someOperation = 20 + 400 % 10 / 2 - 15
let anotherOperation = 52 * 27 % 200 / 2 + 5

// Task 1 - Enter your code below
let result = value % divisor 

// Task 2 - Enter your code below
var (value, divisor) % = 0
let isPerfectMultiple = (value % divisor) % = 0

1 Answer

Michael Reining
Michael Reining
10,101 Points

Hi Matt,

Task 1 is correct. Task 2 is wrong.
isPerfectMultiple should be of type Bool. It should evaluate to true if the result is equal to zero or to false if it does not.

To do that, all you need to do is this.

// Enter your code below
let value = 200
let divisor = 5

let someOperation = 20 + 400 % 10 / 2 - 15
let anotherOperation = 52 * 27 % 200 / 2 + 5

// Task 1 - Enter your code below

let result = value % divisor

// Task 2 - Enter your code below

let isPerfectMultiple = result == 0

I hope that helps,

Mike

PS: As always, I recommend playing with the code in the Playground to get a feel for it. Doing that has really helped me learn Swift faster.

PPS: Thanks to the awesome resources on Team Treehouse, I launched my first app.

Now you can practice writing Swift code directly on your iPhone :-)

Code! Learn how to program with Swift

Always helpful plus good advice.