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](https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/StringsAndCharacters.html#//apple_ref/doc/uid/TP40014097-CH7-ID291), in the Apple documentation. — Eric Aya, Jun 05 '15 at 16:13

score 105 · Accepted Answer · 2015-06-05T16:14:20.700

105

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 05 '15 at 16:14

answered Jun 05 '15 at 16:06

score 0 · Answer 2 · answered Dec 07 '21 at 19:59

0

example :

var age = 27

print("I'm (age) years old.")

output: I'm 27 years old.

you need add to back slash in front (age)

answered Dec 07 '21 at 19:59

Mesut

This solution has already been given by the accepted answer – Christos Koninis Dec 07 '21 at 21:24

score 0 · Answer 3 · answered Jan 31 '22 at 19:30

0

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 '22 at 19:30

Fernando Zafe

3 Answers3