iOS_1_加法器

//
//  BeyondViewController.h
//  01_calc
//
//  Created by beyond on 14-7-20.
//  Copyright (c) 2014 com.beyond. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface BeyondViewController : UIViewController
// IBOutlet IBAction,,storyboard

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

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

// button
- (IBAction)btnClick:(UIButton *)sender;
@end

//
//  BeyondViewController.m
//  01_calc
//
//  Created by beyond on 14-7-20.
//  Copyright (c) 2014 com.beyond. All rights reserved.
//

#import "BeyondViewController.h"

@interface BeyondViewController ()

@end

@implementation BeyondViewController

- (void)viewDidLoad
{
[super viewDidLoad];

}
#pragma mark - button,
// button
- (IBAction)btnClick:(UIButton *)sender
{
// viewson
NSLog(@"view%dson",self.view.subviews.count);

// buttontag4
if (4==sender.tag) {
NSLog(@"button %@",sender);

// 1,,2,self
// UITextField *textField1=_num1;
NSString *n1=self.num1.text;
NSString *n2=self.num2.text;
NSLog(@"1 %@ 2 %@",n1,n2);

int result=[n1 intValue]+[n2 intValue];
self.result.text=[NSString stringWithFormat:@"%d",result];
}

switch ([sender tag]) {
case 1:
NSLog(@"tag1button");
break;
case 2:
NSLog(@"tag2button");
break;
default:
break;
}

// BeyondViewController
NSLog(@"self  %@",self);

[_num1 resignFirstResponder];
[_num2 resignFirstResponder];
}

@end