Login Coding in iOS

-(IBAction)login:(id)sender

{

    NSString *user=username.text;

    NSString *pass=password.text;

    NSString *name=@"asan";

    NSString *word=@"111";

    

    if ([user isEqual:name]&&[pass isEqual:word]) 

    {

       /* Sentient *som=[[Sentient alloc]init];

        [self.navigationController pushViewController:som animated:YES];*/

        

    }

   else

   {

       UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"LoginFailed" 

       message:@"password Mismatch" delegate:nil cancelButtonTitle:@"ok" otherButtonTitles: nil];

       [alert show];

       [alert release];

   }

}