My code cannot be compiled but the output doesn't show anything.

Hi there,

it is hard to tell you what went wrong without having your input :)

But let's get you up to speed:

1) First part of challenge you simply need to add method in Person class (before last curly brace). This method can look like this one:

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

2) Second part of this challenge requires you to create 2 constants. First is aPerson (so you need to use initializer) and then myFullName for which you only need to use aPerson object and call method you did created in 1st part.

So, here is aPerson

let aPerson = Person(firstName: "John", lastName:"Smith")

and here is a myFullName :

let myFullName = aPerson.fullName() 

NOTE: you can use another name than "John Smith", that is only for example :D

I hope now it all compiles and you can continue your learning journey!

Cheers! Jarek