NAME    [Toc]    [Back]

     ctype - character classification macros

SYNOPSIS    [Toc]    [Back]

     #include <ctype.h>

     int
     isalpha(int c);

     int
     isupper(int c);

     int
     islower(int c);

     int
     isdigit(int c);

     int
     isxdigit(int c);

     int
     isalnum(int c);

     int
     isspace(int c);

     int
     ispunct(int c);

     int
     isprint(int c);

     int
     isgraph(int c);

     int
     iscntrl(int c);

     int
     isblank(int c);

     int
     isascii(int c);

     int
     toupper(int c);

     int
     tolower(int c);

     int
     toascii(int c);

DESCRIPTION    [Toc]    [Back]

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

     See each function's own manual page 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),  stdio(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'').

OpenBSD      3.6                          April      19,     1991