ctype(3) - NetBSD Manual Pages

CTYPE(3)                NetBSD Library Functions Manual               CTYPE(3)


NAME

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


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #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

     The above functions perform character tests and conversions on the inte-
     ger c.

     See the specific manual 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, with the exception of isblank(), isascii(), and
     toascii(), conform to ANSI X3.159-1989 (``ANSI C89'').

NetBSD 4.0                     January 26, 2006                     NetBSD 4.0