Swift
}
class circle { var area = [radius]() var cprint: Int { return area.count }
subscript(i: Int) -> radius { get { return area[i] } set { area[i] = newValue } } func circleprint() { println("The number of rooms is \(cprint)") } var rectarea: circumference? }
class radius { let radiusname: String init(radiusname: String) { self.radiusname = radiusname } }
class circumference { var circumName: String? var circumNumber: String? var circumarea: String?
func buildingIdentifier() -> String? { if circumName != nil { return circumName 177