XCode error "invalid operands to binary expression"

iphone ios5 xcode4.3
Piyo picture Piyo · Jun 26, 2012 · Viewed 11.9k times · Source

I have an NSTimeInterval that is stored as a double. I would like to get the amount of minutes that are inide of the second value using the % operator.

int remainingSeconds = scratch % 60;

The error said "invalid operands to binary expression" point at % Help please.

Answer

Omar Abdelhafith picture Omar Abdelhafith · Jun 26, 2012

modulus is used on integers, so for your code to work do the following

int remainingSeconds = (int)scratch % 60;

To use modulus on floats use fmod

int remainingSeconds = fmod(scratch, 60);

check answer here How to make a modulo operation in objective-c / cocoa touch?

Related questions

Detect Focus Change for UITextField

I'm trying to set the animation for the view to move up when keyboard is hiding and appearing for the text fields and I got it to work perfectly fine, but when the focus moves from one text field to …

Read More
How accurate is iPhone GPS (in radius)?

i want to know how accurate our gps on iphone 4/4S because my new project is using gps for tracking something. i mean accurate is about meter. I have search other question like mine but i don't have the answer. …

Read More
performSegueWithIdentifier doesn't work

My main view controller is in a navigation controller and it conforms to EditViewControllerDelegate protocol. It is the delegate of my two view controllers that I need to present modally. @interface EditViewController : UIViewController @property (nonatomic) id <EditViewControllerDelegate> delegate; @…

Read More