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() except that the argument c must be a lower-case letter.

RETURN VALUE

On successful completion, _toupper() returns the upper-case letter corresponding to the argument passed.

ERRORS

No errors are defined.

EXAMPLES

None.

APPLICATION USAGE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

islower(), toupper(), <ctype.h>, the XBD specification, Locale.