NAME    [Toc]    [Back]

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

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <ctype.h>
     int c

     isalpha(c);

     isupper(c);

     islower(c);

     isdigit(c);

     isxdigit(c);

     isalnum(c);

     isspace(c);

     ispunct(c);

     isprint(c);

     isgraph(c);

     iscntrl(c);

     isblank(c);

     isascii(c);

     toupper(c);

     tolower(c);

     toascii(c);

DESCRIPTION    [Toc]    [Back]

     The above macros perform character tests and conversions on the integer
     c.

     See the specific manual pages for more information.

SEE ALSO    [Toc]    [Back]

     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    [Toc]    [Back]

     These functions, with the exception of isblank() and toascii(), conform
     to ANSI X3.159-1989 (``ANSI C'').

BSD                             April 19, 1991                             BSD