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_ismbclower, _ismbclower_l, _ismbcupper, _ismbcupper_l

Checks whether a multibyte character is a lowercase or uppercase character.

Important note Important

This API cannot be used in applications that execute in the Windows Runtime. For more information, see CRT functions not supported with /ZW.

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
);

c

Character to be tested.

locale

Locale to use.

Each of these routines returns a nonzero value if the character satisfies the test condition or 0 if it does not. If c<= 255 and there is a corresponding _ismbb routine (for example, _ismbcalnum corresponds to _ismbbalnum), the result is the return value of the corresponding _ismbb routine.

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.

Routine

Required header

_ismbclower

<mbstring.h>

_ismbclower_l

<mbstring.h>

_ismbcupper

<mbstring.h>

_ismbcupper_l

<mbstring.h>

For more compatibility information, see Compatibility in the Introduction.

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