class Man {
    var name: String

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

class Employee: Man {
    var position: String

    override init(_ name: String) {
        self.position = "unknown"
        super.init(name)
    }
}

let employee = Employee("Max")
//employee.position is "unknown"

print("position is \(employee.position)")