Initial ViewController.m Set Up for "Build a World Clock in Objective-C."

ViewController.m

//ViewController.m

#import "ViewController.h"

@interface ViewController ()
    @property (weak, nonatomic) IBOutlet UIButton *NYC;
    @property (weak, nonatomic) IBOutlet UIButton *paris;
    @property (weak, nonatomic) IBOutlet UIButton *moscow;
    @property (weak, nonatomic) IBOutlet UIButton *hongKong;
    @property (weak, nonatomic) IBOutlet UIButton *honolulu;
    @property (weak, nonatomic) IBOutlet UIButton *seattle;
    @property (weak, nonatomic) IBOutlet UILabel *timeLabel;
    @property (weak, nonatomic) IBOutlet UILabel *dateLabel;

@end
  
@implementation ViewController
   - (void)viewDidLoad {
       [super viewDidLoad];
   }

   -(IBAction)cityButtonTapped:(UIButton *)sender {
    
   }

@end