classes in swift

//simple class

class Man
{
    //instance variable
    var name:String = "Silin"
    var age:Int = 2
    var isMarried=false //firas???
    var moto:String="Chab Chab Chab"

    //method
    func sayHi()
    {
        print ("\(self.name) says \(self.moto)")
    }

}

//create an instance
//var silin=Man()
//silin.sayHi()
//silin.moto="I want to U.S.A"
//silin.sayHi()

/*
//class with constructor
class Firas
{
    var name:String
    var moto:String

    //constructor
    init()
    {
        self.name="Firas"
        self.moto="I want to marry ...."
    }

    func sayHi()
    {
        print ("\(self.name) says \(self.moto)")
    }
}

var student=Firas()
student.sayHi()



//class with constructor and arguments
class Oleg
{
    var name:String
    var moto:String

    init(name:String, moto:String)
    {
        self.name=name
        self.moto=moto
    }

    func sayHi()
    {
        print ("\(self.name) says \(self.moto)")
    }
}

var student=Oleg(name:"Oleg",moto:"I AM HERE!!!")
student.sayHi()

*/

class Phone
{
    var name:String
    var owner:Man? //owner is nil by defualt -> so declare it as optinal

    init(name:String)
    {
        self.name=name
    }

    func setOwner(owner:Man)
    {
        self.owner=owner
    }

    func callFriend(friend:Man)
    {
        print ("\(self.owner!.name) call \(friend.name)")
    }
}

var lg=Phone(name:"LG G6")
var groot=Man()
var drax=Man()
groot.name="Groot"
drax.name="Drax"
lg.setOwner(owner:groot)
lg.callFriend(friend:drax)