Standard library header <stdbool.h> (C99)(deprecated in C23)

This header provides macros for boolean type.

Macros
bool (C99)(removed in C23)	convenience macro, expands to _Bool (keyword macro)
Macro constants
true (C99)(removed in C23)	expands to integer constant 1 (macro constant)
false (C99)(removed in C23)	expands to integer constant 0 (macro constant)
__bool_true_false_are_defined (C99)(deprecated in C23)	expands to integer constant 1 (macro constant)

Synopsis

#if __STDC_VERSION__ < 202311l
#define bool _Bool
#define true 1
#define false 0
#endif

#define __bool_true_false_are_defined 1