OC编写计算器

用OC编写的计算机小程序，实现了加减乘除等等，清零，删除等功能

//
//  AppDelegate.m
//  UI_Homework1_Computer
//
//  Created by 姜鑫 on 14-6-7.
//  Copyright （c） 2014年 l@yout.com 雷鸥科技. All rights reserved.
//

#import “AppDelegate.h“
#import “MainViewController.h“
@implementation AppDelegate

- （BOOL）application:（UIApplication *）application didFinishLaunchingWithOptions:（NSDictionary *）launchOptions
{
    self.window = [[UIWindow alloc] initWithframe:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    MainViewController *mainVC = [[MainViewController alloc]init];
    self.window.rootViewController = mainVC;
    
    [mainVC release];
    [_window release];
    return YES;
}

- （void）applicationWillResignActive:（UIApplication *）application
{
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions （such as an incoming phone call or SMS message） or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks disable timers and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- （void）applicationDidEnterBackground:（UIApplication *）application
{
    // Use this method to release shared resources save user data invalidate timers and store enough application state information to restore your application to its current state in case it is terminated later. 
    // If your application supports background execution this method is called instead of applicationWillTerminate: when the user quits.
}

- （void）applicationWillEnterForeground:（UIApplication *）application
{
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- （void）applicationDidBecomeActive:（UIApplication *）application
{
    // Restart any tasks that were paused （or not yet started） while the application was inactive. If the application was previously in the background optionally refresh the user interface.
}

- （void）applicationWillTerminate:（UIApplication *）application
{
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2014-06-08 12:46  UI_Homework1_Computer\
     文件        6148  2014-06-09 23:39  UI_Homework1_Computer\.DS_Store
     目录           0  2014-06-19 22:45  __MACOSX\
     目录           0  2014-06-19 22:45  __MACOSX\UI_Homework1_Computer\
     文件         120  2014-06-09 23:39  __MACOSX\UI_Homework1_Computer\._.DS_Store
     目录           0  2014-06-12 23:26  UI_Homework1_Computer\UI_Homework1_Computer\
     文件         300  2014-06-07 14:00  UI_Homework1_Computer\UI_Homework1_Computer\AppDelegate.h
     目录           0  2014-06-19 22:45  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\
     文件         171  2014-06-07 14:00  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\._AppDelegate.h
     文件        2391  2014-06-07 14:46  UI_Homework1_Computer\UI_Homework1_Computer\AppDelegate.m
     文件         171  2014-06-07 14:46  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\._AppDelegate.m
     目录           0  2014-06-07 14:00  UI_Homework1_Computer\UI_Homework1_Computer\en.lproj\
     文件          45  2014-06-07 14:00  UI_Homework1_Computer\UI_Homework1_Computer\en.lproj\InfoPlist.strings
     目录           0  2014-06-19 22:45  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\en.lproj\
     文件         171  2014-06-07 14:00  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\en.lproj\._InfoPlist.strings
     目录           0  2014-06-07 14:00  UI_Homework1_Computer\UI_Homework1_Computer\Images.xcassets\
     目录           0  2014-06-07 14:00  UI_Homework1_Computer\UI_Homework1_Computer\Images.xcassets\AppIcon.appiconset\
     文件         333  2014-06-07 14:00  UI_Homework1_Computer\UI_Homework1_Computer\Images.xcassets\AppIcon.appiconset\Contents.json
     目录           0  2014-06-19 22:45  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\Images.xcassets\
     目录           0  2014-06-19 22:45  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\Images.xcassets\AppIcon.appiconset\
     文件         171  2014-06-07 14:00  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\Images.xcassets\AppIcon.appiconset\._Contents.json
     目录           0  2014-06-07 14:00  UI_Homework1_Computer\UI_Homework1_Computer\Images.xcassets\LaunchImage.launchimage\
     文件         442  2014-06-07 14:00  UI_Homework1_Computer\UI_Homework1_Computer\Images.xcassets\LaunchImage.launchimage\Contents.json
     目录           0  2014-06-19 22:45  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\Images.xcassets\LaunchImage.launchimage\
     文件         171  2014-06-07 14:00  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\Images.xcassets\LaunchImage.launchimage\._Contents.json
     文件         359  2014-06-07 16:56  UI_Homework1_Computer\UI_Homework1_Computer\main.m
     文件         171  2014-06-07 16:56  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\._main.m
     文件         530  2014-06-12 23:26  UI_Homework1_Computer\UI_Homework1_Computer\MainViewController.h
     文件         171  2014-06-12 23:26  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\._MainViewController.h
     文件       13346  2014-06-12 23:26  UI_Homework1_Computer\UI_Homework1_Computer\MainViewController.m
     文件         171  2014-06-12 23:26  __MACOSX\UI_Homework1_Computer\UI_Homework1_Computer\._MainViewController.m
............此处省略30个文件信息