_toupper(3C)
NAME
_toupper − transliterate lower-case characters to upper-case
SYNOPSIS
#include <ctype.h> int _toupper(int c);
DESCRIPTION
The _toupper() macro is equivalent to toupper(3C) except that the argument c must be a lower-case letter.
RETURN VALUES
On successful completion, _toupper() returns the upper-case letter corresponding to the argument passed.
ERRORS
No errors are defined.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| MT-Level | MT-Safe |
| CSI | Enabled |
SEE ALSO
islower(3C), toupper(3C), attributes(5)
SunOS 5.6 — Last change: 20 Dec 1996