[UI基础]day01(代码)

简单计算器

@property (weak, nonatomic) IBOutlet UITextField *num1;
@property (weak, nonatomic) IBOutlet UITextField *num2;
@property (weak, nonatomic) IBOutlet UILabel *result;

- (IBAction)calculate:(id)sender;

- (IBAction)calculate:(id)sender {
    NSString *num1Str = self.num1.text;
    NSString *num2Str = self.num2.text;
    self.result.text = [NSString stringWithFormat:@"%d",num1Str.intValue + num2Str.intValue];
    [self.view endEditing:YES];

}

效果图：