Flag Project 2 View Controller

ViewController.swift

import UIKit

class ViewController: UIViewController {

    @IBOutlet var button1: UIButton!
    @IBOutlet var button2: UIButton!
    @IBOutlet var button3: UIButton!
    
    var countries = [String]()
    var correctAnswer = 0
    var score = 0
    
    override func viewDidLoad() {
        
        
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        
        button1.layer.borderWidth = 1
        button2.layer.borderWidth = 1
        button3.layer.borderWidth = 1
        button1.layer.borderColor = UIColor.lightGray.cgColor
        button2.layer.borderColor = UIColor.lightGray.cgColor
        button3.layer.borderColor = UIColor.lightGray.cgColor
        
        countries += ["estonia", "france", "germany", "ireland", "italy", "monaco", "nigeria", "poland", "russia", "spain", "uk", "us"]
        
        askQuestion()
        
    }
    
    func askQuestion() {
        
        //shuffle the array
        countries.shuffle()
        
        correctAnswer = Int.random(in: 0...2)
        title = countries[correctAnswer].uppercased()
        
         button1.setImage(UIImage(named: countries[0]), for: .normal)
         button2.setImage(UIImage(named: countries[1]), for: .normal)
         button3.setImage(UIImage(named: countries[2]), for: .normal)
       
    }
   
    
    @IBAction func buttonTapped(_ sender: UIButton) {
        
        print("Button tapped")
        print(sender.tag)
        
        var title: String
        
        if (sender.tag) == correctAnswer {
            title = "Correct"
            score += 1
        } else {
            title = "Wrong"
            score -= 1
        }
        
        //create an Alert View Controller with a message and style.
        let ac = UIAlertController(title: title, message: "You score is \(score).", preferredStyle: .alert)
        
        //add an action to the alert (with a button) to dismiss and move on.
        ac.addAction(UIAlertAction(title: "next",  style: .default, handler: {_ in
            self.askQuestion()
        }))
         
        //actually present the alert
        self.present(ac, animated: true, completion: nil)
        
 
    }
    
    
}

First commit