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

Clair Owen
Clair Owen
623 Points
Posted by Clair Owen
Clair Owen
623 Points

How create println statement within the greeting function to use the variable person?

ie, if pass the function the name Tom, it will then print "Hello Tom". This should use string interpolation.

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

person ("Tom")

1 Answer

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Hello Clair :

Everything looks good so far, the only thing is that you are not calling the function right. Remember that when you call the function, you have to call it by its name. 

// Functions name is “greeting”

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

// Proper way of calling a function 
greeting("Tom")

if you need more help please let me know.