Iphone “我该如何解决？”；期望表达式“；

我是新手，所以任何帮助都将不胜感激。提前谢谢

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m

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坦率地说，在你的实施过程中似乎发生了炸弹爆炸。首先，您似乎缺少.m开头的

@implementation

指令。然后，调用

[super-viewDidLoad]在iAction中，当它应该位于缺少的viewDidLoad方法中时

此外，您从未在iAction末尾添加右大括号
}

您的.h文件应如下所示：

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    IBOutlet UITextField *textField1;
    IBOutlet UITextField *textField2;
    IBOutlet UILabel *label1;
}
@end

#import "ViewController.h"

@implementation ViewController

- (IBAction)calculate {
    int x = ([textField1.text floatValue]);
    int c = x*([textField2.text floatValue]);
}

- (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.
}

@end

它仍然说它希望在-（iAction）calculate{line中有一个表达式，而我缺少@end？？？是的……但我不知道为什么xcode认为我缺少@end，而它在那里？
#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    IBOutlet UITextField *textField1;
    IBOutlet UITextField *textField2;
    IBOutlet UILabel *label1;
}
@end

#import "ViewController.h"

@implementation ViewController

- (IBAction)calculate {
    int x = ([textField1.text floatValue]);
    int c = x*([textField2.text floatValue]);
}

- (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.
}

@end