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#import "ViewController.h"
#import "Brain.h"
@interface ViewController ()
@property BOOL enteringNumber;
@end
@implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
if (!self.myBrain)
{
self.myBrain = [[Brain alloc] init];
}
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(IBAction) numberPressed:(UIButton *)sender
{
NSString * number = sender.currentTitle;
if (self.enteringNumber)
{
self.display.text = [self.display.text stringByAppendingString:number];
}
else
{
self.display.text = number;
self.enteringNumber = YES;
}
}
-(IBAction) operationPressed:(UIButton *)sender
{
if(self.enteringNumber)
{
[self enterPressed:(UIButton *)sender];
}
self.display.text = [NSString stringWithFormat:@"%g", [self.myBrain performOperation:sender.currentTitle]];
}
-(IBAction) enterPressed:(id)sender
{
[self.myBrain addObject:[self.display.text doubleValue]];
self.enteringNumber = NO;
}
-(IBAction) clearPressed:(id)sender
{
self.enteringNumber = NO;
self.display.text = @"0";
[self.myBrain clear];
}
@end
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