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iOS Swift 2.0 Basics Swift Types Recap: Swift Types

Paul Kooi
Paul Kooi
3,766 Points
Posted by Paul Kooi
Paul Kooi
3,766 Points

Interpolated String Problem?

Hi I'm trying to figure out what's wrong here? Xcode has no problem with my String Literal but Treehouse says it's wrong?

let firstValue = 55 let secondValue = 714 let product = firstValue * secondValue

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

types.swift 
// Enter your code below

let firstValue = 55
let secondValue = 714
let product = firstValue * secondValue

let output = "\("The product of") \(firstValue) \("times") \(secondValue) \("is") \(product)"
Andrea Gorodezky
Andrea Gorodezky
1,255 Points

The product of should not be in parenthesis or quotes... your code should be more like.. let output = "\The product of (firstValue) \times (secondValue) \is (product)"

1 Answer

ianhan3
ianhan3
4,263 Points
ianhan3
ianhan3
4,263 Points

Using String Interpolation you can assign the constant "output" to a String Literal. String Interpolation follows the syntax (variableName). You don't need most of the parentheses you have in your answer and you only need one set of quotes to initially define the String. 

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

Think of string interpolation as a placeholder for your sentence. For example: 

var fruit = "orange"
print("My favorite fruit is an \(fruit)")

If you decide that your favorite fruit is an apple, you can change the value of the variable "fruit" and still get the correct string in the print statement.