How can I add Variables into a String?(Swift)

Question

I want to add some variables to a string:

var age:Int
var pets:String
lblOutput.text = "Your"+ var pets +"is"+ var age +"years old!"

The both variables aren't nil. And i think this is how it worked in objective-c, wasn't it?

Thanks!

Your well documented answer is here, in the Apple documentation. — Eric Aya
– Eric Aya, Commented Jun 5, 2015 at 16:13

score 137 · Accepted Answer · 2015-06-05 16:14:20Z

137

In swift, string interpolation is done using \() within strings. Like so:

let x = 10
let string = "x equals \(x) and you can also put expressions here \(5*2)"

so for your example, do:

var age:Int=1
var pet:String="dog"
lblOutput.text = "Your \(pet) is \(age) years old!"

edited Jun 5, 2015 at 16:14

answered Jun 5, 2015 at 16:06

user4233369

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1 Comment

carlo711 Over a year ago

Thank you mate for very speedy answer!

Fernando Zafe · Accepted Answer · 2022-01-31 19:30:15Z

2

You can add variables to a string this way also:

let args = [pets, age]

let msg = String(format: "Your %@ is %@ years old", arguments: args)

print(msg)

answered Jan 31, 2022 at 19:30

Fernando Zafe

495 bronze badges

Comments

Mesut · Accepted Answer · 2022-11-20 10:39:34Z

0

example :

var age = 27
var name = "George"

print("I'm \(name), My age is \(age)")

output: I'm George, My age is 27

you need add to back slash in front (age)

edited Nov 20, 2022 at 10:39

answered Dec 7, 2021 at 19:59

Mesut

212 bronze badges

2 Comments

Christos Koninis Over a year ago

This solution has already been given by the accepted answer

Cloud Cho Over a year ago

Your suggestion is an easy to read example. For me, user user4233369 suggestion is hard to understand ;)

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