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iOS Swift 2.0 Basics Swift Operators Working With Operators

Mahmoud Rajabzadeh-Mashhadi
Mahmoud Rajabzadeh-Mashhadi
489 Points

remainder

I have listened to the last 2 lessons twice and I don't get this.

let result = value ???

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 

// Task 2 - Enter your code below

1 Answer

Nathan Tallack
Nathan Tallack
22,159 Points

So that % operator is called modulo. That is the one that tells you what remains. We have a value of 200 and a divisor of 5. When we get 5 and divide it into 200 we get no remainder left over. So 200 % 5 = 0.

With that in mind, your code would look like 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  # See, here we are setting result to what the remainder is.

// Task 2 - Enter your code below
let isPerfectMultiple = result == 0  # Here we are evaluating if result is equal to 0 and returning true.