IOS calculater
这个计算器主要是使用数组进行实现的.虽然没有使用前缀后缀表达式,但是是一种方法o.
.h文件
- //
- // LCViewController.h
- // 具有优先级的calculator
- //
- // Created by lichan on 13-12-4.
- // Copyright (c) 2013年 com.lichan. All rights reserved.
- //
- #import <UIKit/UIKit.h>
- @interface LCViewController : UIViewController
- @property (retain, nonatomic) IBOutlet UITextField *textField;
- @property (retain, nonatomic) IBOutlet UITextField *longTextField;
- @property (strong,nonatomic)NSMutableArray *numbersArray;
- @property (strong,nonatomic)NSMutableArray *operateArray;
- @property (copy,nonatomic)NSString *numberTempString;
- - (IBAction)longTextField:(id)sender;
- - (IBAction)numberPressed:(id)sender;
- - (IBAction)clearScreen:(id)sender;
- - (IBAction)operatePressed:(UIButton *)sender;
- - (IBAction)equalOperate:(id)sender;
- @end
//
// LCViewController.h
// 具有优先级的calculator
//
// Created by lichan on 13-12-4.
// Copyright (c) 2013年 com.lichan. All rights reserved.
//#import <UIKit/UIKit.h>@interface LCViewController : UIViewController
@property (retain, nonatomic) IBOutlet UITextField *textField;
@property (retain, nonatomic) IBOutlet UITextField *longTextField;@property (strong,nonatomic)NSMutableArray *numbersArray;@property (strong,nonatomic)NSMutableArray *operateArray;@property (copy,nonatomic)NSString *numberTempString;- (IBAction)longTextField:(id)sender;- (IBAction)numberPressed:(id)sender;
- (IBAction)clearScreen:(id)sender;- (IBAction)operatePressed:(UIButton *)sender;
- (IBAction)equalOperate:(id)sender;
@end
.m文件
- //
- // LCViewController.m
- // 具有优先级的calculator
- //
- // Created by lichan on 13-12-4.
- // Copyright (c) 2013年 com.lichan. All rights reserved.
- //
- #import "LCViewController.h"
- @interface LCViewController ()
- @end
- @implementation LCViewController
- - (void)viewDidLoad
- {
- [super viewDidLoad];
- _numberTempString = [[NSMutableString alloc]init];
- _numbersArray = [[NSMutableArray alloc]init];
- _operateArray = [[NSMutableArray alloc]init];
- // Do any additional setup after loading the view, typically from a nib.
- }
- -(void)dealloc
- {
- [_numberTempString release];
- [_textField release];
- [_numbersArray release];
- [_operateArray release];
- [_longTextField release];
- [super dealloc];
- }
- - (void)didReceiveMemoryWarning
- {
- [super didReceiveMemoryWarning];
- // Dispose of any resources that can be recreated.
- }
- - (IBAction)numberPressed:(id)sender {
- UIButton *tempButton = (UIButton *)sender;
- NSString *tempNumber = [tempButton titleLabel].text;//得到button的title值,以便于在textField显示
- [_textField setText:[NSString stringWithFormat:@"%@%@",_textField.text,tempNumber]]; //textfield 上字符串的连接,以便于形成字符串
- [_longTextField setText:[NSString stringWithFormat:@"%@%@",_longTextField.text,tempNumber]];
- _numberTempString = _textField.text;
- }
- - (IBAction)clearScreen:(id)sender {
- [_numbersArray removeAllObjects];
- [_operateArray removeAllObjects];
- _numberTempString = nil;
- [_textField setText:@""];
- [_longTextField setText:@""];
- }
- - (IBAction)operatePressed:(UIButton *)sender {
- UIButton *tempButton = (UIButton *)sender;
- NSString *temp = [tempButton titleLabel].text;//得到button的title值,以便于在textField显示
- [_longTextField setText:[NSString stringWithFormat:@"%@%@",_longTextField.text,temp]];
- if (_textField.text != nil) {
- [_numbersArray addObject:_numberTempString];
- NSLog(@"---_numbersArray%@",_numbersArray);
- [_textField setText:@""];
- [_operateArray addObject:sender.currentTitle];
- NSLog(@"_operateArray %@",_operateArray);
- }
- else if (_textField.text == nil)
- {
- [_operateArray removeLastObject];
- [_operateArray addObject:sender.currentTitle];
- NSLog(@"_operateArray %@",_operateArray);
- }
- }
- - (IBAction)equalOperate:(id)sender {
- UIButton *tempButton = (UIButton *)sender;
- NSString *temp = [tempButton titleLabel].text;//得到button的title值,以便于在textField显示
- [_longTextField setText:[NSString stringWithFormat:@"%@%@",_longTextField.text,temp]];
- if (_textField.text != nil) {
- [_numbersArray addObject:_numberTempString];
- NSLog(@"---_numbersArray%@",_numbersArray);
- }
- //----------------
- NSString *result = [[NSString alloc]init];
- while (_numbersArray.count >= 3 )
- {
- NSString *firstOperate = [_operateArray objectAtIndex:0];
- NSString *sencondOperate = [_operateArray objectAtIndex:1];
- NSString *firstNumber = [_numbersArray objectAtIndex:0];
- NSString *sencondNumber = [_numbersArray objectAtIndex:1];
- NSString *thirdNumber = [_numbersArray objectAtIndex:2];
- if ([firstOperate isEqualToString:@"+"] ||[firstOperate isEqualToString:@"-"])
- {
- if ([sencondOperate isEqualToString:@"*"] ||[sencondOperate isEqualToString:@"/"])
- {
- if ([sencondOperate isEqualToString:@"*"]) {
- result = [self multiOperatorSymbolByOne:sencondNumber Two:thirdNumber];
- }
- if ([sencondOperate isEqualToString:@"/"]) {
- result = [self divOperatorSymbolByOne:sencondNumber Two:thirdNumber];
- }
- [_operateArray removeObjectAtIndex:1];
- [_numbersArray removeObjectAtIndex:2];
- [_numbersArray replaceObjectAtIndex:1 withObject:result];
- NSLog(@"num:%@",_numbersArray);
- }
- else
- {
- NSString *result = [[NSString alloc]init];
- if ([firstOperate isEqualToString:@"+"]) {
- result = [self plusOperatorSymbolByOne:firstNumber Two:sencondNumber];
- }
- if ([firstOperate isEqualToString:@"-"]) {
- result = [self subOperatorSymbolByOne:firstNumber Two:sencondNumber];
- }
- [_operateArray removeObjectAtIndex:0];
- [_numbersArray replaceObjectAtIndex:0 withObject:result];
- [_numbersArray removeObjectAtIndex:1];
- NSLog(@"%@",_numbersArray);
- }
- }
- else
- {
- NSString *firstOperate = [_operateArray objectAtIndex:0];
- NSString *firstNumber = [_numbersArray objectAtIndex:0];
- NSString *sencondNumber = [_numbersArray objectAtIndex:1];
- if ([firstOperate isEqualToString:@"*"]) {
- result = [self multiOperatorSymbolByOne:firstNumber Two:sencondNumber];
- }
- if ([firstOperate isEqualToString:@"/"]) {
- result = [self divOperatorSymbolByOne:firstNumber Two:sencondNumber];
- }
- [_operateArray removeObjectAtIndex:0];
- [_numbersArray removeObjectAtIndex:1];
- [_numbersArray replaceObjectAtIndex:0 withObject:result];
- NSLog(@"%@",_numbersArray);
- }
- }
- NSString *firstOperate = [_operateArray objectAtIndex:0];
- NSString *firstNumber = [_numbersArray objectAtIndex:0];
- NSString *sencondNumber = [_numbersArray objectAtIndex:1];
- NSLog(@"%@",_numbersArray);
- if ([firstOperate isEqualToString:@"*"]) {
- result = [self multiOperatorSymbolByOne:firstNumber Two:sencondNumber];
- }
- if ([firstOperate isEqualToString:@"/"]) {
- result = [self divOperatorSymbolByOne:firstNumber Two:sencondNumber];
- }
- if ([firstOperate isEqualToString:@"+"]) {
- result = [self plusOperatorSymbolByOne:firstNumber Two:sencondNumber];
- }
- if ([firstOperate isEqualToString:@"-"]) {
- result = [self subOperatorSymbolByOne:firstNumber Two:sencondNumber];
- }
- NSLog(@"result : %@",result);
- [_longTextField setText:[NSString stringWithFormat:@"%@%@",_longTextField.text,result]];
- }
- #pragma mark 操作符号 method
- - (NSString *)plusOperatorSymbolByOne:(NSString *)str1 Two:(NSString *)str2
- {
- float num1 = [str1 floatValue];
- float num2 = [str2 floatValue];
- float resultNum = num1 + num2;
- return [NSString stringWithFormat:@"%f",resultNum];
- }
- - (NSString *)subOperatorSymbolByOne:(NSString *)str1 Two:(NSString *)str2
- {
- float num1 = [str1 floatValue];
- float num2 = [str2 floatValue];
- float resultNum = num1 - num2;
- return [NSString stringWithFormat:@"%f",resultNum];
- }
- - (NSString *)multiOperatorSymbolByOne:(NSString *)str1 Two:(NSString *)str2
- {
- float num1 = [str1 floatValue];
- float num2 = [str2 floatValue];
- float resultNum = num1 * num2;
- return [NSString stringWithFormat:@"%f",resultNum];
- }
- - (NSString *)divOperatorSymbolByOne:(NSString *)str1 Two:(NSString *)str2
- {
- float num1 = [str1 floatValue];
- float num2 = [str2 floatValue];
- float resultNum = num1 / num2;
- return [NSString stringWithFormat:@"%f",resultNum];
- }
- @end
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