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iOS Swift Functions and Optionals Functions Function Return Types

Munir Niaz
Munir Niaz
1,831 Points
Posted by Munir Niaz
Munir Niaz
1,831 Points

Modify the definition of the function named greeting to return a String and replace the println statement with a return

Modify the definition of the function named greeting to return a String and replace the println statement with a return statement. The function should return a greeting. For example, if you pass in a string "Tom" then the return string would be: "Hello Tom".

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi Munir,

You start with this:

func greeting(person: String) {
    println("Hello \(person)")
}

That returns nothing and prints out a string. You want to return that string, rather than printing it out.

First, change the method signature to include a returned string:

func greeting(person: String) -> String { // returning a string
    println("Hello \(person)")
}

Then change the println to a return and lose the brackets:

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

I hope that helps.

Steve.