NAME
isprint —
printing character test (space
character inclusive)
SYNOPSIS
#include
<ctype.h>
int
isprint(int
c);
DESCRIPTION
The
isprint()
function tests for any printing character including space
(‘ ’).
RETURN VALUES
The isprint() function returns zero if the
character tests false or non-zero if the character tests true.
SEE ALSO
isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), islower(3), ispunct(3), isspace(3), isupper(3), isxdigit(3), stdio(3), toascii(3), tolower(3), toupper(3), ascii(7)
STANDARDS
The isprint() function conforms to
ANSI X3.159-1989
(“ANSI C89”).
HISTORY
The isprint() function first appeared in
Version 7 AT&T UNIX.
CAVEATS
The argument to isprint() must be
EOF or representable as an unsigned
char; otherwise, the result is undefined.