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.