Swift error: Missing return in a function expected to return 'String'

Question

I\'m trying to add edit some code from Apple\'s QuestionBot. I came up with this:

func responseToQuestion(question: String) -> String {

    if question.h         


        

Answer 1

Missing return in a function expected to return 'String'

should the function return something , because you did not set return if do not match any one question.hasPrefix()

 func responseToQuestion(question: String) -> String {

            if question.hasPrefix("hello") {
                return "Hello"
            } else if question.hasPrefix("where") {
                return "There"
            } else if question.hasPrefix("what"){
                return "I don't know"
            }
          return "something"
        }