• 20 hours
  • Medium
License

Free online content available in this course.

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Last updated on 4/27/23

Optimize your code with functions

Evaluated skills

  • Create functions in Swift

  • Question 1

    Which keyword is used to declare a function?

    • var

       

    • func

       

    • function

    • funk

  • Question 2

    Select the correct function declarations:

    Careful, there are several correct answers.
    • func hello() {

          print("Hello")

      }

    • func hello {

          print("Hello")

      }

    • func hello() -> String {

          print("Hello")

      }

    • func hello() -> String {

          return "Hello"

      }

    • func hello() -> Int {

          return "Hello"

      }

  • Question 3

    In which context does the variable message exist in the following example?

    var names = ["Jenny", "Livia", "Paul"]

    

    func hello() {

        var message = "Welcome "

        for name in names {

            message + = name + ", "

        }

        print(message)

    }

     

    Careful, there are several correct answers.

    • In the overall context of the file

       

    • In the hello function

    • In the for-in loop

    • It's not accessible in this code, and shouldn't be used

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