strrchr, wcsrchr, _mbsrchr, _mbsrchr_l
Scan a string for the last occurrence of a character.
char *strrchr( const char *str, int c ); // C only char *strrchr( char *str, int c ); // C++ only const char *strrchr( const char *str, int c ); // C++ only wchar_t *wcsrchr( const wchar_t *str, wchar_t c ); // C only wchar_t *wcsrchr( wchar_t *str, wchar_t c ); // C++ only const wchar_t *wcsrchr( const wchar_t *str, wchar_t c ); // C++ only unsigned char *_mbsrchr( const unsigned char *str, unsigned int c ); // C only unsigned char *_mbsrchr( unsigned char *str, unsigned int c ); // C++ only const unsigned char *_mbsrchr( const unsigned char *str, unsigned int c ); // C++ only unsigned char *_mbsrchr_l( const unsigned char *str, unsigned int c, _locale_t locale ); // C only unsigned char *_mbsrchr_l( unsigned char *str, unsigned int c, _locale_t locale ); // C++ only const unsigned char *_mbsrchr_l( const unsigned char *str, unsigned int c, _locale_t locale ); // C++ only
Parameters
- str
-
Null-terminated string to search.
- c
-
Character to be located.
- locale
-
Locale to use.
The strrchr function finds the last occurrence of c (converted to char) in str. The search includes the terminating null character.
wcsrchr and _mbsrchr are wide-character and multibyte-character versions of strrchr. The arguments and return value of wcsrchr are wide-character strings; those of _mbsrchr are multibyte-character strings.
In C, these functions take a const pointer for the first argument. In C++, two overloads are available. The overload taking a pointer to const returns a pointer to const; the version that takes a pointer to non-const returns a pointer to non-const. The macro _CONST_CORRECT_OVERLOADS is defined if both the const and non-const versions of these functions are available. If you require the non-const behavior for both C++ overloads, define the symbol _CONST_RETURN.
_mbsrchr validates its parameters. If str is NULL, the invalid parameter handler is invoked, as described in Parameter Validation. If execution is allowed to continue, errno is set to EINVAL and _mbsrchr returns 0. strrchr and wcsrchr do not validate their parameters. These three functions behave identically otherwise.
The output value is affected by the setting of the LC_CTYPE category setting of the locale; for more information, see setlocale. The versions of these functions without the _l suffix use the current locale for this locale-dependent behavior; the versions with the _l suffix are identical except that they use the locale parameter passed in instead.
| TCHAR.H routine | _UNICODE & _MBCS not defined | _MBCS defined | _UNICODE defined |
|---|---|---|---|
| _tcsrchr | strrchr | _mbsrchr | wcsrchr |
| n/a | n/a | _mbsrchr_l | n/a |
| Routine | Required header | Compatibility |
|---|---|---|
| strrchr | <string.h> | ANSI, Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 |
| wcsrchr | <string.h> or <wchar.h> | ANSI, Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 |
| _mbsrchr, _mbsrchr_l | <mbstring.h> | ANSI, Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 |
For more information about compatibility, see Compatibility.
Reference
String Manipulation (CRT)Locale
Interpretation of Multibyte-Character Sequences
strchr, wcschr, _mbschr, _mbschr_l
strcspn, wcscspn, _mbscspn, _mbscspn_l
_strnicmp, _wcsnicmp, _mbsnicmp, _strnicmp_l, _wcsnicmp_l, _mbsnicmp_l
strpbrk, wcspbrk, _mbspbrk, _mbspbrk_l
strspn, wcsspn, _mbsspn, _mbsspn_l
