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iOS Object-Oriented Swift Class Inheritance Overriding Methods

object oriented swift 3

class Person { let firstName: String let lastName: String

init(firstName: String, lastName: String) {
    self.firstName = firstName
    self.lastName = lastName
}

func getFullName() -> String {
    return "\(firstName) \(lastName)"
}

}

// Enter your code below

class Doctor: Person { override func getFullName() -> String { return "Dr. (lastName)" }

}

let someDoctor = Doctor(firstName: "Sam", lastName: "Smith")

objects.swift
class Person {
    let firstName: String
    let lastName: String

    init(firstName: String, lastName: String) {
        self.firstName = firstName
        self.lastName = lastName
    }

    func getFullName() -> String {
        return "\(firstName) \(lastName)"
    }
}

// Enter your code below

class Doctor: Person {
    override func getFullName() -> String {
        return "Dr. \(lastName)"
    }

}

let someDoctor = Doctor(firstName: "Sam", lastName: "Smith")