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iOS Swift 2.0 Basics Swift Operators Working With Operators

Daniel Bakh
Daniel Bakh
141 Points

Comparison operations and bool values

What is wrong with this code?

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
result == 0
let isPerfectMultiple = false
someOperation <= anotherOperation 
let isGreater = false

2 Answers

Martin Wildfeuer
PLUS
Martin Wildfeuer
Courses Plus Student 11,071 Points

Hey there! Let's go through this step by step:

"Using the remainder operator, compute the remainder given the value and a divisor. Assign this value to a constant named result." You are using division instead of remainder

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

Make sure to use the remainder operator, explained in detail at Apple Docs.

"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." The comparisons are on single lines, which does not affect code and only makes sense in playgrounds. Moreover, you are directly assigning fixed booleans to the constants, without the logic requested.

// Task 2 - Enter your code below
result == 0
let isPerfectMultiple = false
someOperation <= anotherOperation 
let isGreater = false

Make sure to assign the result of your comparison (a boolean) to the constant like in this example:

let result = oneInt == otherInt // true iff oneInt == otherInt, else false

Hope that helps :)

Daniel Bakh
Daniel Bakh
141 Points

Hi,

Thanks for the help !