temperature converter not giving output
<p>i have written a code for temperature conversion for iphone but it is not working and neither giving any error please help</p>

<p><strong>interface section</strong></p>

<pre><code>#import &lt;UIKit/UIKit.h&gt;

float n ;
float k;



@interface farh_celcius_conv_AppDelegate : NSObject &lt;UIApplicationDelegate&gt; {
    UIWindow *window;
    UILabel *display;
    IBOutlet UITextField *farhenite;
    IBOutlet UIButton *convert;

}


-(IBAction) convert; 


@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet UILabel *display;
@property (nonatomic, retain) IBOutlet UITextField *farhenite;
@property (nonatomic, retain) IBOutlet UIButton *convert;
@end
</code></pre>

<p><strong>implementation section</strong> </p>

<pre><code>#import "farh_celcius_conv_AppDelegate.h"


@implementation farh_celcius_conv_AppDelegate


@synthesize window,display,farhenite;





-(IBAction) convert  {

    NSString *str = [NSString text];

    float n = [str floatValue];


      k = (n - 32)*(5/9);



    [display setText:[NSString stringWithFormat:@"%f",k]];  

}

- (void)applicationDidFinishLaunching:(UIApplication *)application {    

    // Override point for customization after application launch
    [window makeKeyAndVisible];
}


- (void)dealloc {
    [window release];
    [super dealloc];
}


@end
</code></pre>
