CTYPE(3) MachTen Programmer’s Manual CTYPE(3)

NAME
isalnum, isalpha, isascii, isblank, iscntrl, isdigit, isgraph, islower,
isprint, ispunct, isspace, isupper, isxdigit, toascii tolower, toupper, -
character classification macros

SYNOPSIS
#include <ctype.h>
int c

isalnum(int c)

isalpha(int c)

isascii(int c)

iscntrl(int c)

isdigit(int c)

isgraph(int c)

islower(int c)

isprint(int c)

ispunct(int c)

isspace(int c)

isupper(int c)

isxdigit(int c)

toascii(int c)

tolower(int c)

toupper(int c)

DESCRIPTION
The above functions perform character tests and conversions on the inte-
ger c. They are available as macros, defined in the include file
<ctype.h>, or as true functions in the C library. See the specific manu-
al pages for more information.

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

STANDARDS
These functions, except for isblank(), toupper(), tolower() and
toascii(), conform to ANSI C3.159-1989 (‘‘ANSI C’’).

4.4BSD June 4, 1993 1