MirBSD manpage: toupper(3), _toupper(3)

TOUPPER(3)                 BSD Programmer's Manual                  TOUPPER(3)


     toupper, _toupper - lower case to upper case letter conversion


     #include <ctype.h>

     toupper(int c);

     _toupper(int c);


     The toupper() function converts a lower-case letter to the corresponding
     upper-case letter. The _toupper() function is identical to toupper() ex-
     cept that c must be a lower-case letter.


     If the argument to the toupper() function is a lower-case letter, the
     corresponding upper-case letter is returned if there is one; otherwise
     the argument is returned unchanged. If the argument to the _toupper()
     function is a lower-case letter, the corresponding upper-case letter is
     returned; otherwise the output is undefined.


     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), ascii(7)


     The toupper() function conforms to ANSI X3.159-1989 ("ANSI C89").

MirBSD #10-current             August 15, 1997                               1

Generated on 2022-12-24 01:00:14 by $MirOS: src/scripts/roff2htm,v 1.113 2022/12/21 23:14:31 tg Exp $ — This product includes material provided by mirabilos.

These manual pages and other documentation are copyrighted by their respective writers; their sources are available at the project’s CVSweb, AnonCVS and other mirrors. The rest is Copyright © 2002–2022 MirBSD.

This manual page’s HTML representation is supposed to be valid XHTML/1.1; if not, please send a bug report — diffs preferred.

Kontakt / Impressum & Datenschutzerklärung