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CTYPE(3)                    BSD 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 <&lt;ctype.h>&gt;
     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 C X3.159-1989 (``ANSI C '').

4.4BSD                           June 4, 1993                                1