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