ispunct
—
punctuation character test
Standard C Library (libc, -lc)
#include <ctype.h>
int
ispunct
(int
c);
The ispunct
() function tests for any printing character
except space (' ') or a character for which
isalnum(3) is true.
The ispunct
() function returns zero if the character
tests false and returns non-zero if the character tests true.
ctype(3),
isalnum(3),
isalpha(3),
isascii(3),
isblank(3),
iscntrl(3),
isdigit(3),
isgraph(3),
islower(3),
isprint(3),
isspace(3),
isupper(3),
isxdigit(3),
stdio(3),
toascii(3),
tolower(3),
toupper(3),
ascii(7)
The ispunct
() function conforms to ANSI
X3.159-1989 (“ANSI C89”).
The argument to ispunct
() must be
EOF
or representable as an unsigned
char; otherwise, the behavior is undefined. See the
CAVEATS section of
ctype(3) for more details.