當我建造它，我得到一個「預期之前

Question

#import <UIKit/UIKit.h> 

@class game; 
@class MainMenu; 
@interface gameOver : UIViewController { 

    IBOutlet UIButton *paButton; 

    IBOutlet UILabel *fScore; 
    game *playagain; 
    back *MainMenu; 
    IBOutlet int hs; 

} 
@property (nonatomic, retain) UIButton *paButton; 

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil highScore:(int)highScore; 

-(IBAction) playAgain; 
-(IBAction) goBack; 

@end 

Answer 1

您還沒有宣佈back任何地方‘回’的錯誤說明符限定符列表，如果它是一個Objective-C類也一樣，只是增加了以下內容正向聲明：

@class back;