func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) -> CLLocation {

let currentLocation: CLLocation = locations[0] as CLLocation
let lat = currentLocation.coordinate.latitude
let long = currentLocation.coordinate.longitude
let center = CLLocationCoordinate2D(latitude: currentLocation.coordinate.latitude, longitude: currentLocation.coordinate.longitude)
let latDelta = 0.05
let longDelta = 0.05
let currentLocationSpan:MKCoordinateSpan =
        MKCoordinateSpanMake(latDelta, longDelta)
let region = MKCoordinateRegion(center: center, span: currentLocationSpan)

myMapView.setRegion(region, animated: true)

let myAnnotation: MKPointAnnotation = MKPointAnnotation()
myAnnotation.coordinate = CLLocationCoordinate2D(latitude: currentLocation.coordinate.latitude, longitude: currentLocation.coordinate.longitude)
    myAnnotation.title = "Current Location"
myMapView.addAnnotation(myAnnotation)

    print("The latitude is (lat)")
    print("The longitude is(long)")
    print(currentLocation)

return currentLocation

}

class ViewControllerB: ViewControllerA {

 override func viewDidLoad() {

    super.viewDidLoad()

    let center = CLLocationCoordinate2D(latitude:currentLocation.coordinate.latitude, longitude:currentLocation.coordinate.longitude)

class ViewControllerB: ViewControllerA {

 let currentLocation: CLLocation? = nil

 override func viewDidLoad() {

    super.viewDidLoad()
    guard let currentLocation = currentLocation else { return }
    let center = CLLocationCoordinate2D(latitude:currentLocation.coordinate.latitude, longitude:currentLocation.coordinate.longitude)
}

viewControllerB.currentLocation = currentLocation