用于objective-c方法和缺少@end错误的xcode期望选择器。

Here is my code

这是我的代码

#import "MasterViewController.h"
#import "DiseaseResultsViewController.h"

@interface MasterViewController ()
@end

@implementation MasterViewController

@synthesize symptomTextField;

- (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:@"searchFunctionSegue"])
    {
        if ([self.symptomTextField.text length])
        {
            DiseaseResultsViewController *resultsViewController = [segue destinationViewController];

            resultsViewController.symptomSearchString = self.symptomTextField.text;
        }
    }
}

@end
#import "MasterViewC