Defined in header <cwchar> int wcscoll( const wchar_t* lhs, const wchar_t* rhs ); Compares two null-terminated wide strings according to the locale most recently installed by std::setlocale, as defined by the LC_COLLATE category. Parameters lhs, rhs - pointers to the null-terminated wide strings to compare Return value Negative value if lhs is less than (precedes) rhs. ​0​ if lhs is equal to rhs. Positive value if lhs is greater than (follows) rhs. Notes Co

Defined in header <cwchar> std::size_t wcscspn( const wchar_t* dest, const wchar_t* src ); Returns the length of the maximum initial segment of the wide string pointed to by dest, that consists of only the characters not found in wide string pointed to by src. Parameters dest - pointer to the null-terminated wide string to be analyzed src - pointer to the null-terminated wide string that contains the characters to search for Return value The length of th

Defined in header <locale> template<class Codecvt, class Elem = wchar_t, class Tr = std::char_traits<Elem> > class wbuffer_convert : public std::basic_streambuf<Elem, Tr> (since C++11) std::wbuffer_convert is a wrapper over stream buffer of type std::basic_streambuf<char> which gives it the appearance of std::basic_streambuf<Elem>. All I/O performed through std::wbuffer_convert undergoes character conversion as defined by the

explicit wbuffer_convert( std::streambuf* bytebuf = 0, Codecvt* pcvt = new Codecvt, state_type state = state_type() ); (1) wbuffer_convert(const std::wbuffer_convert&) = delete; (2) (since C++14) 1) Constructs the wbuffer_convert object with the specified underlying byte stream, specified codecvt facet, and specified initial conversion state (all parameters are optional) 2) The copy constructor is deleted, wbuffer_convert i

Defined in header <locale> state_type state() const; Returns the current value of the conversion state, which is stored in this wbuffer_convert object. The conversion state may be explicitly set in the constructor and is updated by all conversion operations. Return value The current conversion state. Example See also state returns the current conversion state (public member function of std::wstring_convert) mbsinit checks if the mbstate_t object represents

Defined in header <locale> std::streambuf* rdbuf() const; (1) std::streambuf* rdbuf( std::streambuf* bytebuf ); (2) 1) returns the pointer to the underlying byte stream. 2) replaces the associated byte stream with bytebuf . Return value 1) the current underlying byte stream. 2) the previous byte stream. Example #include <iostream> #include <sstream> #include <locale> #include <codecvt> int main() { // convert UTF-8 to UCS4 std::

Defined in header <cwchar> wchar_t *wcscat( wchar_t *dest, const wchar_t *src ); Appends a copy of the wide string pointed to by src to the end of the wide string pointed to by dest. The wide character src[0] replaces the null terminator at the end of dest. The resulting wide string is null-terminated. The behavior is undefined if the destination array is not large enough for the contents of both str and dest and the terminating null wide character. The behavior is undefine

Defined in header <cwchar> std::size_t wcrtomb( char* s, wchar_t wc, std::mbstate_t* ps ); Converts a wide character to its narrow multibyte representation. If s is not a null pointer, the function determines the number of bytes necessary to store the multibyte character representation of wc (including any shift sequences), and stores the multibyte character representation in the character array whose first element is pointed to by s. At most MB_CUR_MAX bytes can be written

Defined in header <cwchar> int vwprintf( const wchar_t* format, va_list vlist ); (1) int vfwprintf( std::FILE* stream, const wchar_t* format, va_list vlist ); (2) int vswprintf( const wchar_t* buffer, std::size_t buf_size, const wchar_t* format, va_list vlist ); (3) Loads the data from locations, defined by vlist,, converts them to wide string equivalents and writes the results to a variety of sinks. 1) Writes the results to stdout. 2) Writes th

Defined in header <cwchar> int vwscanf( const wchar_t* format, va_list vlist ); (1) (since C++11) int vfwscanf( std::FILE* stream, const wchar_t* format, va_list vlist ); (2) (since C++11) int vswscanf( const wchar_t* buffer, const wchar_t* format, va_list vlist ); (3) (since C++11) Reads data from the a variety of sources, interprets it according to format and stores the results into locations defined by vlist. 1) Reads the data from stdin 2) Reads the data