#include <stdbool.h>

The header stdbool.h in the C Standard Library for the C
programming language contains four macros for a Boolean data
type. This header was introduced in C99, which was adopted as
an ANSI standard in May 2000. 11 years ago.


#ifndef _STDBOOL_H
#define _STDBOOL_H

#define bool _Bool
#define true 1
#define false 0
#define __bool_true_false_are_defined 1

#endif

Spread the word!

>>5

Out of curiosity, I always wondered why people didn't use char instead of int for representing booleans in pre-C99 code.