isleadbyte, _isleadbyte_l

Indicates whether the first byte of the specified character is the lead byte of a multibyte character.

int isleadbyte(
   int c 
);
int _isleadbyte_l(
   int c, 
   _locale_t locale
);

Parameters

• c
  A character to test. This parameter is expected to be a multibyte character whose type is int.

• locale
  A locale, instead of the current locale, that governs this operation. For more information, see Locale.

Return Value

A nonzero value if the first byte of the c parameter is the lead byte of a multibyte character; otherwise, zero. The return value is always zero in the "C" locale and in single-byte character set (SBCS) locales.

Remarks

The isleadbyte and _isleadbyte_l functions test the result of casting parameter c to an unsigned char.

Generic-Text Routine Mappings

TCHAR.H routine	_UNICODE & _MBCS not defined	_MBCS defined	_UNICODE defined
_isleadbyte	Always returns false	_isleadbyte	Always returns false

Requirements

Routine	Required header
isleadbyte	<ctype.h>
_isleadbyte_l	<ctype.h>

For additional compatibility information, see Compatibility in the Introduction.

.NET Framework Equivalent

Not applicable, but see System::Globalization::CultureInfo.

See Also

Reference

Locale

Byte Classification

_ismbb Routines

Concepts

Support for Multibyte Character Sets (MBCSs)

Change History

Date	History	Reason
May 2011	Documented the "locale" parameter of _isleadbyte_l.	Information enhancement.