// Here width and height are stored properties
struct Resolution {
    var width = 0
    var height = 0
}
class VideoMode {
    var resolution = Resolution()
    var interlaced = false
    var frameRate = 0.0
    var name: String?
}

let someResolution = Resolution()
let someVideoMode = VideoMode()

print("The width of someResolution is \(someResolution.width)")

print("The width of someVideoMode is \(someVideoMode.resolution.width)")


someVideoMode.resolution.width = 1280
print("The width of someVideoMode is now \(someVideoMode.resolution.width)")

let vga = Resolution(width: 640, height: 480)

print("The width of someResolution is \(vga.width)")

print("The width of someVideoMode is \(vga.height)")