Objective-C formatting string for boolean?

Question

What formatter is used for boolean values?

EDIT:

Example: NSLog(@\" ??\", BOOL_VAL);, what is ?? ?

Answer 1

I believe the easiest way to do this is:

NSLog(@" %@", @(BOOL_VAL));

@(expression)

Dynamically evaluates the boxed expression and returns the appropriate object literal based on its value (i.e. NSString for const char*, NSNumber for int, etc.).