iOS calc

gistfile1.m

//
//  CMViewController.m
//  Xcalc
//
//  Created by Chyld Medford on 8/7/12.
//  Copyright (c) 2012 Chyld Medford. All rights reserved.
//

#import "CMViewController.h"

@interface CMViewController ()

@end

@implementation CMViewController
@synthesize answer;
@synthesize math1;
@synthesize math2;

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    [[self view] setBackgroundColor:[[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"x1.jpg"]]];
}

- (void)viewDidUnload
{
    [self setAnswer:nil];
    [self setMath1:nil];
    [self setMath2:nil];
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

- (IBAction)add:(id)sender {
    int a = [[math1 text] intValue];
    int b = [[math2 text] intValue];
    int sum = a + b;
    NSString *result = [NSString stringWithFormat:@"%d", sum];
    [answer setText:result];

    [self setAnswerColor:sum];
}

- (IBAction)sub:(id)sender {
    int a = [[math1 text] intValue];
    int b = [[math2 text] intValue];
    int diff = a - b;
    NSString *result = [NSString stringWithFormat:@"%d", diff];
    [answer setText:result];
    
    [self setAnswerColor:diff];
}

- (IBAction)mul:(id)sender {
    int a = [[math1 text] intValue];
    int b = [[math2 text] intValue];
    int sum = a * b;
    NSString *result = [NSString stringWithFormat:@"%d", sum];
    [answer setText:result];
}

- (IBAction)div:(id)sender {
    int a = [[math1 text] intValue];
    int b = [[math2 text] intValue];
    int sum = a /   b;
    NSString *result = [NSString stringWithFormat:@"%d", sum];
    [answer setText:result];
}

- (IBAction)pow:(id)sender {
    int a = [[math1 text] floatValue];
    int b = [[math2 text] floatValue];
    float power = powf(a, b);
    NSString *result = [NSString stringWithFormat:@"%f", power];
    [answer setText:result];
    
    [self setAnswerColor:power];
}

- (IBAction)sqr:(id)sender {
    int a = [[math1 text] floatValue];
    //int b = [[math2 text] floatValue];
    float root = sqrtf(a);
    NSString *result = [NSString stringWithFormat:@"%f", root];
    [answer setText:result];

    [self setAnswerColor:root];
}

- (void)setAnswerColor:(int)value
{
    if(value < 0)
    {
        [answer setTextColor:[UIColor redColor]];
        NSLog(@"%d", value);
    }
    else
    {
        [answer setTextColor:[UIColor blackColor]];
        NSLog(@"%d", value);
    }
}
@end