Outputting BOOL in NSLog

[john855]

What's the % escape for putting a BOOL in NSLog()? I tried %c since BOOL is actually a char but it didn't work.

[detz]

BOOL is an int so %d will work..or you could do
NSLog(@"BOOL = %@\n", (boolVar ? @"YES" : @"NO"));

[exorcyze]

I think actually BOOL is just a special int, so you should be able to use %i

[PhoneyDeveloper]

If you want to use %i or %d you should cast it to int just in case the char and int are handled differently with varargs. But detz's solution is the way I always do it.

NSLog(@"BOOL = %d", (int)aBool);

[john855]

Thanks

[superuser]

BOOL is, I believe, an NSNumber, not an int.

[baja_yu]

NSNumber is on object class so BOOL is most definitely not an NSNumber. What it is is this:

typedef signed char BOOL;
// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C"
// even if -funsigned-char is used.
#define OBJC_BOOL_DEFINED


#define YES (BOOL)1
#define NO (BOOL)0

But most importantly, this thread is 2 years old.

[superuser]

You are correct... I read that too. However, when using a BOOL in the context of, for example, core data, one is directed to use an NSNumber rather than an int.

But are you sure that the MOST important point is the age of this thread?

Originally Posted by baja_yu

NSNumber is on object class so BOOL is most definitely not an NSNumber. What it is is this:



But most importantly, this thread is 2 years old.

[mrburns05]

Originally Posted by john855

What's the % escape for putting a BOOL in NSLog()? I tried %c since BOOL is actually a char but it didn't work.

Old post but anyways, i usually use this

NSLog (@"Value of my BOOL = %@", someBool ? @"YES" : @"NO");

[osaban]

Originally Posted by mrburns05

Old post but anyways, i usually use this

NSLog (@"Value of my BOOL = %@", someBool ? @"YES" : @"NO");

Thanks for this post this did it for me!