ISCNTRL(3)                386BSD Programmer's Manual                ISCNTRL(3)

NAME
     iscntrl - control character test

SYNOPSIS
     #include <ctype.h>

     int
     iscntrl(int c)

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

RETURN VALUES
     The iscntrl() macro returns zero if the character tests false and returns
     non-zero if the character tests true.

SEE ALSO
     isascii(3),  isalnum(3),  isalpha(3),  isdigit(3),  isgraph(3),
     islower(3),  isprint(3),  ispunct(3),  isspace(3),  isupper(3),
     isxdigit(3),  toascii(3),  tolower(3),  toupper(3),  stdio(3) ascii(7)

STANDARDS
     The iscntrl() function conforms to ANSI C3.159-1989 (``ANSI C'').

BSD Experimental                 June 29, 1991                               1