ViewController.swift

import UIKit
import CoreLocation

class ViewController: UIViewController, CLLocationManagerDelegate {
    
    let locmanager = CLLocationManager()
    
    let locationLabel: UILabel = {
        let label = UILabel()
        label.textColor = .darkGray
        label.font = UIFont.boldSystemFont(ofSize: 32)
        label.textAlignment = .center
        label.numberOfLines = 0
        label.translatesAutoresizingMaskIntoConstraints = false
        return label
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        setupUI()
        
        self.locmanager.delegate = self
        
        locmanager.requestWhenInUseAuthorization()
        
        locmanager.startUpdatingLocation()
        
        DispatchQueue.main.asyncAfter(deadline: .now() + 5) {
            self.locmanager.stopUpdatingLocation()
        }
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        let loc = locations.last!
        let coord = loc.coordinate

        locationLabel.text = """
        You are at
        \(coord.latitude)
        \(coord.longitude)
        """
        print("You are at \(coord.latitude) \(coord.longitude)")
    }
    
    func setupUI() {
        view.addSubview(locationLabel)
        NSLayoutConstraint.activate([
            locationLabel.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            locationLabel.centerYAnchor.constraint(equalTo: view.centerYAnchor),
        ])
    }
}