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iOS Swift Functions and Optionals Functions Syntax and Parameters

Brandon Escalante
Brandon Escalante
5,772 Points
Posted by Brandon Escalante
Brandon Escalante
5,772 Points

Confused? Swift Functions and Options: Challenge Task 2 of 3

So the question is:

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).

I first did the code below, which looked correct to me but with

ver person = "Tom"

and it told me I needed to add "XYZZY" not "Tom" for the variable. Am I missing something here? The code passed with the, "XYZZY".

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

1 Answer

kirkbyo
kirkbyo
15,791 Points
kirkbyo
kirkbyo
15,791 Points

Hey Brandon,

You don't need the person variable that holds "XYZZY", because when the function gets called the person parameter will be replaced by whatever string is passed.

Example:

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

greeting("Tom") // Will Print: "Hello Tom"
greeting("Joe") // Will Print: "Hello Joe"
greeting("Ozzie") // Will Print: "Hello Ozzie"

Hope this helped. If you have any other question don't hesitate to ask,

Ozzie