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iOS

Posted by Kamran Ismayilov
Kamran Ismayilov
5,753 Points

Final Exam OOP

Why my code crashes on the line where I wrote the convenience init? it complains saying argument 'sides' must precede argument 'name'

I check out the solution after having done it by my self and see that I did not include convenience init. I fallowed as on the video but it crashed!

please explain why does it crashes ? is because of lately update ? if yes please show me how to fix it?

also please could you explain why we are using a convenience init? what we do we use it for? A lot thanks in Advance.

lass Shape {
    var sides: Int
    var name: String

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

class Square: Shape {
    var sideLength: Double
    var area: Double {

        get {
             return sideLength * sideLength

        }

        set {
            sideLength = sqrt(newValue)
        }
    }

    init(sideLength: Double,sides: Int, name: String) {
        self.sideLength = sideLength
        super.init(sides: sides, name: name)
    }

    convenience init(sideLength: Double) {
        self.init(name: "Square", sides: 4, sideLength: sideLength)
    }
}