_ismbclower, _ismbclower_l, _ismbcupper, _ismbcupper_l

Checks whether a multibyte character is lowercase or uppercase.

Important

This API cannot be used in applications that execute in the Windows Runtime. For more information, see CRT functions not supported in Universal Windows Platform apps.

Syntax

int _ismbclower(
   unsigned int c
);
int _ismbclower_l(
   unsigned int c,
   _locale_t locale
);
int _ismbcupper(
   unsigned int c
);
int _ismbcupper_l(
   unsigned int c,
   _locale_t locale
);

Parameters

c
Character to be tested.

locale
Locale to use.

Return value

Each of these routines returns a nonzero value if the character satisfies the test condition. Otherwise, they return 0. If c<= 255 and there's a corresponding _ismbb routine (for example, _ismbcalnum corresponds to _ismbbalnum), the result is the return value of the corresponding _ismbb routine.

Remarks

Each of these functions tests a given multibyte character for a given condition.

The versions of these functions with the _l suffix are identical except that they use the locale passed in instead of the current locale for their locale-dependent behavior. For more information, see Locale.

Routine	Test condition	Code page 932 example
_ismbclower	Lowercase alphabetic	Returns nonzero if and only if c is a single-byte representation of an ASCII lowercase English letter: 0x61<=c<=0x7A.
_ismbclower_l	Lowercase alphabetic	Returns nonzero if and only if c is a single-byte representation of an ASCII lowercase English letter: 0x61<=c<=0x7A.
_ismbcupper	Uppercase alphabetic	Returns nonzero if and only if c is a single-byte representation of an ASCII uppercase English letter: 0x41<=c<=0x5A.
_ismbcupper_l	Uppercase alphabetic	Returns nonzero if and only if c is a single-byte representation of an ASCII uppercase English letter: 0x41<=c<=0x5A.

By default, this function's global state is scoped to the application. To change this behavior, see Global state in the CRT.

Requirements

Routine	Required header
_ismbclower	<mbstring.h>
_ismbclower_l	<mbstring.h>
_ismbcupper	<mbstring.h>
_ismbcupper_l	<mbstring.h>

For more compatibility information, see Compatibility.

See also

Character classification
_ismbc routines
Locale
Interpretation of multibyte-character sequences
is, isw routines
_ismbb routines