SecondViewController.swift

import UIKit

class SecondViewController: UIViewController {
    
    // reference the new text field
    @IBOutlet weak var DisplayField: UITextField!
    
    // create variable for new text field to display
    var userText:String! = ""

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        
        //display the string passed from the first view controller
        DisplayField.text = userText
        
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    @IBAction func GoBack(_ sender: UIButton) {
        self.performSegue(withIdentifier: "unwindToMenu", sender: self)
    }

    /*
    // 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.destinationViewController.
        // Pass the selected object to the new view controller.
    }
    */

}