ispunct, ispunct_l—punctuation character predicate #include <ctype.h>
int ispunct(int c);
#include <ctype.h>
int ispunct_l(int c, locale_t locale);
Description
ispunct is a macro which classifies singlebyte charset values by table
lookup. It is a predicate returning non-zero for printable
punctuation characters, and 0 for other characters. It is defined only
if c is representable as an unsigned char or if c is EOF.
ispunct_l is like ispunct but performs the check based on the
locale specified by the locale object locale. If locale is
LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
You can use a compiled subroutine instead of the macro definition by
undefining the macro using `#undef ispunct' or `#undef ispunct_l'.
Returns
ispunct, ispunct_l return non-zero if c is a printable
punctuation character.
Portability
ispunct is ANSI C.
ispunct_l is POSIX-1.2008.
No supporting OS subroutines are required.