A_ContainerViewController.h

#import <UIKit/UIKit.h>


@class A_ContainerVC;
@protocol A_ContainerVCDelegate <NSObject>


-(void)sendValue:(NSString *)Name;

@optional



@end


@interface A_ContainerViewController : UIViewController

@property(nonatomic,assign) id <A_ContainerVCDelegate> delegate;


- (IBAction)btnSend:(id)sender;

@end

A_ContainerViewController.m

#import "A_ContainerViewController.h"

@interface A_ContainerViewController ()

@end

@implementation A_ContainerViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

- (IBAction)btnSend:(id)sender {
    
    NSString *text=@"Tutorial";
    
    [self.delegate sendValue:text];
    
}
@end

B_ContainerViewController.h

#import <UIKit/UIKit.h>
#import "ViewController.h"
#import "A_ContainerViewController.h"
@interface B_ContainerViewController : UIViewController

@property (strong, nonatomic) IBOutlet UILabel *lbl_B_VC;
@end

B_ContainerViewController.m

#import "B_ContainerViewController.h"


@interface B_ContainerViewController ()<MainVCDelegate>

@end

@implementation B_ContainerViewController
@synthesize lbl_B_VC;
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"B"]) {
        
        
        [(ViewController *)segue.destinationViewController setDelegate:self];
        
        /*
         LayersViewController *layersViewController = (LayersViewController*)segue.destinationViewController;
         layersViewController.name=@"Deneme";
         */
        
        
    }
    
}


-(void)sendValue2:(NSString *)Name{
    
    lbl_B_VC.text=Name;
    
}

@end

ViewController.h

#import <UIKit/UIKit.h>
#import "A_ContainerViewController.h"

@class MainVC;
@protocol MainVCDelegate <NSObject>



-(void)sendValue2:(NSString *)Name;

@end


@interface ViewController : UIViewController

@property(nonatomic,assign) id <MainVCDelegate> delegate;

@property (strong, nonatomic) IBOutlet UILabel *lblVC;



@end

ViewController.m

#import "ViewController.h"


@interface ViewController () <A_ContainerVCDelegate>



@end

@implementation ViewController
@synthesize lblVC;
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"A"]) {
        
        
        [(A_ContainerViewController *)segue.destinationViewController setDelegate:self];
        
        
        
    }
   
}


-(void)sendValue:(NSString *)Name{
    
    lblVC.text = Name;
    [self.delegate sendValue2:Name];
    
}

@end