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iOS Swift Functions and Optionals Functions Function Return Types

Functions Extra credit challenge - please check

Write a function called fullName which takes two String parameters: firstName and lastName. It concatenates the two parameters and returns them as the fullName.

Is this good?

func fullName(firstName: String, lastName: String) -> String {
return firstName + lastName
}

Also if I wanted to print it out could I do something like this?

println("Performer's identity is = \(fullName (Iggy,Azalea))")

3 Answers

William Li
PLUS
William Li
Courses Plus Student 26,868 Points

Looks good to me. Although I'd like to add a space in between your first and last name to make output look nicer

func fullName(firstName: String, lastName: String) ->String {
    return firstName + " " + lastName
}

One more thing, println("Performer's identity is = \(fullName (Iggy,Azalea))") won't work, because fullName takes 2 strings arguments, and neither of what you pass in is String. You can do it like this instead:

let name = fullName("Iggy", "Azalea")
println("Performer's identity is = \(name)")
// => "Performer's identity is = Iggy Azalea"

This doesn't work for me, all kinds of weird things happening. I have:

func fullName(firstName: String, lastName: String) -> String {
     return firstName + lastName
}

When I call this with fullName I get this weirdness.

fullName(firstName: String, lastName: String)

Except firstName: String are editable and only String for the second part is??? What is going on.

I should be able to have this:

func fullName(firstName: String, lastName: String) -> String {
     return firstName + lastName
}

print(fullName("Phil","Hanson"))

But this doesn't work.

Oh right! I have to declare a variable or constant first! AArrrghhhhh.

Thanks William

func fullName(firstName: String, lastName: String) -> String {
return firstName + lastName
}

let name = fullName("Iggy", "Azalea")
println("Performer's identity is = \(name)")

Would there ever be a situation where the let statement would be above the func?

Donnie Wang
Donnie Wang
1,842 Points

Your works. Alternative solution using string interpolation:

func fullName (firstName: String, lastName: String) -> String {
    return "\(firstName) \(lastName)"
}

fullName("Iggy", "Azalea")