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iOS Swift Functions and Optionals Functions Syntax and Parameters

Michael Bates
Michael Bates
13,344 Points
Posted by Michael Bates
Michael Bates
13,344 Points

How do I call a name within a function?

How do I call a name within a function? I am getting an error dealing with the name Tom, and I am not quite sure what is wrong.

parameters.swift 
func greeting(person: String) {
    println("Hello")
}
greeting (Tom)
println("Hello (\(greeting)")

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi Michael,

Try:

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

So your func takes a String as a parameter. Strings are contained in double quotes. So, pass in Tom surrounded by double quotes. Inside the func, the output is then "Hello Tom" as we've used String interpolation to include the contents of the variable person inside the string. Make sense?

I hope that helps,

Steve.

Michael Bates
Michael Bates
13,344 Points
Michael Bates
Michael Bates
13,344 Points

Indeed it does make sense now! Thank you for the help, Steve!

Steve Hunter
Steve Hunter
57,712 Points

No problem; glad you got it sorted. :smile: