Locale-Sensitive C/C++ String Operation Functions

char *strstr( const char *string, const char *strCharSet );

wchar_t *wcsstr( const wchar_t *string, const wchar_t *strCharSet );

wchar_t *wcswcs( const wchar_t *string, const wchar_t *strCharSet );

unsigned char *_mbsstr( const unsigned char *string, const unsigned char *strCharSet );

TCHAR *_tcsstr( const TCHAR *string, const TCHAR *strCharSet );

Internationalization (I18n) Function Overview

The strstr function returns a pointer to the first occurrence of strCharSet in string, or NULL if strCharSet does not appear in string. If strCharSet points to a string of zero length, the function returns string.

wcsstr is the wide version of the function; its parameters and return are wide character strings.

wcswcs is a deprecated alias for wcsstr. Use wcsstr instead.

_mbsstr is supported only on Windows platforms and is the multibyte version of the function; its parameters and return are multibyte character strings.

_tcsstr is the Windows-only Generic version of strstr.

I18n Issues

For Windows MBCS platforms, ensure that the multibyte code page is set properly, as _mbsstr depends on it. By default, the multibyte code page is set to the system-default ANSI code page obtained from the operating system at program startup. Use _getmbcp and _setmbcp to query or change the current multibyte code page, respectively.

Recommended Replacements*

ANSI UTF-8	strstr
ANSI UTF-16	wcsstr
Microsoft Windows MBCS	_mbsstr
Microsoft Windows Unicode	wcsstr
Microsoft Windows Generic	_tcsstr

Locale-Sensitive C/C++ String Operation Functions