Not understanding synchronous/asynchronous code

Hello,

For the below code please can you tell me why the test code print("line 64") is being printed after the test code print("line 84") ? (i.e. how do I stop that happening?)

I would like the program to wait until the results array has been parsed before continuing the code (otherwise it does not have content to present).

I'm a bit confused why this is happening because I haven't written "async" anywhere.

import UIKit

struct NewsFeed: Codable {
    
    var id: String
    var name: String
    var country: String
    var type: String
    var situation: String
    var timestamp: String
    
}

class QuoteTableViewController: UITableViewController {
    
    var newsFeed: [[String: String]] = []
    
    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        // let selectedQuote = quotes[indexPath.row]
        // performSegue(withIdentifier: "moveToQuoteDetail", sender: selectedQuote)
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // tableView.dataSource = self
    }
    
    // Uncomment the following line to preserve selection between presentations
    // self.clearsSelectionOnViewWillAppear = false
    
    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
    // self.navigationItem.rightBarButtonItem = self.editButtonItem
    
    
    // MARK: - Table view data source
    
    override func numberOfSections(in tableView: UITableView) -> Int {
        // #warning Incomplete implementation, return the number of sections
        return 1
    }
    
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // (viewDidLoad loads after tableView)

        // try getting array results here
            let urlString = "https://www.notafunnyname.com/jsonmockup.php"
            let url = URL(string: urlString)
            
            let session = URLSession.shared
            
            let dataTask = session.dataTask(with: url!) { (data, response, error) in
                
                var dataString = String(data: data!, encoding: String.Encoding.utf8)
                
                if error == nil && data != nil {
                    // Parse JSON
                    let decoder = JSONDecoder()
                    
                    do {
                        
                        var newsFeed = try decoder.decode([NewsFeed].self, from: data!)
                        
                        print("line 64")
                        // print(newsFeed)
                        // print("line 125")
                        // print(newsFeed.count)
                        print(error)
                        
                    }
                    catch{
                        print("Line 72, Error in JSON parsing")
                        print(error)
                    }
                    
                }
            }
            
            // Make the API Call
            dataTask.resume()
        
        // #warning Incomplete implementation, return the number of rows
        
        print("line 84")
        print(newsFeed.count)
        
        return 10
        
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        // let cell = tableView.dequeueReusableCell(withIdentifier: "reuseIdentifier", for: indexPath)
        
        let cell = UITableViewCell ()

        cell.textLabel?.text = "test"
        
        return cell
    }
    
    /*
     // Override to support conditional editing of the table view.
     override func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
     // Return false if you do not want the specified item to be editable.
     return true
     }
     */
    
    /*
     // Override to support editing the table view.
     override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
     if editingStyle == .delete {
     // Delete the row from the data source
     tableView.deleteRows(at: [indexPath], with: .fade)
     } else if editingStyle == .insert {
     // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
     }
     }
     */
    
    /*
     // Override to support rearranging the table view.
     override func tableView(_ tableView: UITableView, moveRowAt fromIndexPath: IndexPath, to: IndexPath) {
     
     }
     */
    
    /*
     // Override to support conditional rearranging of the table view.
     override func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
     // Return false if you do not want the item to be re-orderable.
     return true
     }
     */
    
    
    // MARK: - Navigation
    
    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destination.
        // Pass the selected object to the new view controller.
        // getPrice()
        print("test_segue")
        if let quoteViewController = segue.destination as? QuoteDetailViewController{
            if let selectedQuote = sender as? String {
                quoteViewController.title = selectedQuote
            }
        }
    }       
}

Many thanks