Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift Functions and Optionals Functions Syntax and Parameters

How do you compile the code, so that the Function of greeting reads "Hello Tom"

Modify the println statement within the greeting function to use the variable person. For example, if you pass a person named "Tom" to the function then it should display: Hello Tom. (Hint: you must use string interpolation).

Everytime I try to compile this code, "Tom" never shows up. How do I compile this code?

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

1 Answer

Fermin Osorio
Fermin Osorio
332 Points

instead of doing this:

println("Hello " + "(person)")

You need to put:

println("Hello \(person).")