COHERENT manpages

This page displays the COHERENT manpage for _toupper() [Convert characters to upper case].

List of available manpages
Index

_toupper() -- ctype Function (libc)

Convert characters to upper case
#include <ctype.h>
int _toupper(c) int c;

The function _toupper() converts the  character c to upper case and returns
the converted character.  Unlike the related function toupper(), _toupper()
is not guaranteed to work correctly  if it is passed something other than a
lower-case character,  that is, any  character for which  islower() returns
true.

See Also

_tolower(),
libc,
toupper()

Notes

_toupper() is not  part of the ANSI standard; COHERENT  includes it only to
support old code.  You should use toupper() instead.