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iOS Swift Functions and Optionals Functions Function Return Types

Posted by Anders Lund
Anders Lund
3,061 Points

Return Statement wrong?

Don't know whats wrong here, i'm trying to return a string from the func. "greeting" but there is something wrong, plz help :)

returns.swift 
func greeting(person: String) {
    return "Hello "+ person
}

greeting ("Tom")

3 Answers

Ryan Jin
Ryan Jin
15,337 Points
Ryan Jin
Ryan Jin
15,337 Points

You have to specify the return type in the function by using a -> and the return type, so your code should look something like this:

func greeting(person: String) -> String{
    return "Hello "+ person
}

greeting ("Tom")

If you are not returning anything, or in another word, you are returning void, you can either ignore the -> (type) or write -> Void, but if you are returning a type like an int or a string, you have a specify it. Hope that helps you :)

Anders Lund
Anders Lund
3,061 Points
Anders Lund
Anders Lund
3,061 Points

aha, thank u :)

Anders Lund
Anders Lund
3,061 Points
Anders Lund
Anders Lund
3,061 Points

U also have to change this //return "Hello "+ person to //return "Hello (person)" for it to run, atleast in the teamThreeHouse program thing.

Ryan Jin
Ryan Jin
15,337 Points

Yeh, probably programmed too much Javascript and I forgot this, thanks for reminding me