Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

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?

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).")