iscntrl()

NAME

iscntrl() - control character test

SYNOPSIS

#include <ctype.h>


int iscntrl (int c)

DESCRIPTION

The iscntrl(3) function tests for any control character.

RETURN VALUES

The iscntrl(3) function returns zero if the character tests false and returns non-zero if the character tests true.

SEE ALSO

isalnum(3)

isalpha(3)

isblank(3)

isdigit(3)

isgraph(3)

islower(3)

isprint(3)

ispunct(3)

isspace(3)

isupper(3)

isxdigit(3)

tolower(3)

toupper(3)