iphone - Conditional exit(0); in applicationDidEnterBackground? -

is ok use exit(0); this?

-(void)applicationdidenterbackground:(uiapplication *)application {      if (userdontwantitruninbackground) {         exit(0);      } } 

will apple approve it?

my understanding apple don't use exit() @ all.

indeed, apple's human interface guidelines:

don’t quit programmatically  never quit ios app programmatically because people tend interpret crash.  

as far can tell, although might work intend, there chance app rejected.