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TOUPPER(P)			    POSIX Programmer's Manual			       TOUPPER(P)

NAME
       toupper - transliterate lowercase characters to uppercase

SYNOPSIS
       #include <ctype.h>

       int toupper(int c);

DESCRIPTION
       The  toupper() function has as a domain a type int, the value of which is representable as
       an unsigned char or the value of EOF. If the argument has any other value, the behavior is
       undefined.  If the argument of toupper() represents a lowercase letter, and there exists a
       corresponding uppercase letter  (as defined by character type information in  the  program
       locale  category  LC_CTYPE ),  the result shall be the corresponding uppercase letter. All
       other arguments in the domain are returned unchanged.

RETURN VALUE
       Upon successful completion, toupper() shall return the uppercase letter	corresponding  to
       the argument passed.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       setlocale()  ,  the  Base  Definitions  volume of IEEE Std 1003.1-2001, Chapter 7, Locale,
       <ctype.h>

COPYRIGHT
       Portions of this text are reprinted and	reproduced  in	electronic  form  from	IEEE  Std
       1003.1,	2003  Edition,	Standard  for Information Technology -- Portable Operating System
       Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003  by
       the  Institute  of  Electrical  and  Electronics Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE  and  The  Open  Group
       Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003				       TOUPPER(P)
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