Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift Basics Swift Types Recap: Swift Types

Albert G
Albert G
4,142 Points
Posted by Albert G
Albert G
4,142 Points

Stuck on coding challenge

not sure whats wrong with my code for step two

types.swift 
// Enter your code below
let firstValue = 2
let secondValue = 4

let product = firstValue * secondValue

let output = " \("the product of") \(firstValue) \("times") \(secondValue) \("is")\(product)"
Albert G
Albert G
4,142 Points
Albert G
Albert G
4,142 Points

ok so i got it to pass with let output = "The product of \(firstValue) times \(secondValue) is \(product)" but that code does not work in xcode

2 Answers

Alexander Davison
Alexander Davison
65,469 Points

You can't use \() around plain text inside of a string.

Swift will try to evaluate the text, which will cause an syntax error. You should omit the () so that Swift understands you aren't trying to evaluate that piece of code but you want it to be part of the string.

Example:

Incorrect code:

let greeting = "\("Hello There"), \(name)"

Correct code:

let greeting = "Hello There, \(name)

I hope this hint will help you. :smile:

If you continue to struggle, jutst ask below and I'll give you additional hints :)

Good luck! ~Alex

Albert G
Albert G
4,142 Points
Albert G
Albert G
4,142 Points

ok so i got it to pass with let output = "The product of \(firstValue) times \(secondValue) is \(product)" but that code does not work in xcode

Albert G
Albert G
4,142 Points
Albert G
Albert G
4,142 Points

figured it out thanks

Alexander Davison
Alexander Davison
65,469 Points

No problem :)

kjvswift93
kjvswift93
13,515 Points
kjvswift93
kjvswift93
13,515 Points 
let firstValue = 2
let secondValue = 4

let product = firstValue * secondValue

let output = "The product of \(firstValue) times \(secondValue) is \(product)"

You didn't format the string interpolation correctly. We never created any constants named "the product of", or "times". The constants we have decried are "firstValue", "secondValue", and "output". These are the names we will use to represent an integer number within the sentence the challenge asks us to make based upon what the values of the the constants firstValue and secondValue are, in this case it is 2 and 4, respectively. The string assigned to the constant output should read "The product of 2 times 4 is 8". Within this string, the values 2, 4, and, 8 will be replaced with the names we assigned them to in between a backslash and pair of parentheses. "(firstValue)" therefore is really "2", with the name of the constant assigned to it "interpolated" (synonymn for inserted or replaced) .