The C++ has a number of functions and macros that are available to work with C wide strings. These functions are available to use in a current program after including the header file using - #include <cwchar> or #include <wchar.h>. All functions and macros of this header file are listed below:
| Functions | Description |
|---|
| fgetwc() | Gets wide character from stream. |
| fgetws() | Gets wide string from stream. |
| fputwc() | Writes wide character to stream. |
| fputws() | Writes wide string to stream. |
| fwide() | Switches a file stream between wide character I/O and narrow character I/O. |
| fwprintf() | Writes formatted data to stream. |
| fwscanf() | Reads formatted data from stream. |
| getwc() | Gets wide character from stream. |
| getwchar() | Gets wide character from stdin. |
| putwc() | Writes wide character to stream. |
| putwchar() | Writes wide character to stdout. |
| swprintf() | Writes formatted data to a wide string. |
| swscanf() | Reads formatted data from string. |
| ungetwc() | Puts a wide character back into the stream. |
| vfwprintf() | Writes formatted data from variable argument list to stream |
| vfwscanf() (C++11) | Reads formatted data from stream into variable argument list |
| vswprintf() (C++11) | Writes formatted data from variable argument list to sized buffer |
| vswscanf() (C++11) | Reads formatted data from wide string into variable argument list |
| vwprintf() | Prints formatted data from variable argument list to stdout |
| vwscanf() (C++11) | Reads formatted data into variable argument list |
| wprintf() | Prints formatted data to stdout. |
| wscanf() | Reads formatted data from stdin. |
| Functions | Description |
|---|
| wcstod() | Converts wide string to double. |
| wcstof() (C++11) | Converts wide string to float. |
| wcstol() | Converts wide string to long integer. |
| wcstold() (C++11) | Converts wide string to long double. |
| wcstoll() (C++11) | Converts wide string to long long integer. |
| wcstoul() | Converts wide string to unsigned long integer. |
| wcstoull() (C++11) | Converts wide string to unsigned long long integer. |
| Functions | Description |
|---|
| btowc() | Converts single byte character to wide character. |
| mbrlen() | Gets length of multibyte character. |
| mbrtowc() | Convert multibyte sequence to wide character. |
| mbsinit() | Check if initial conversion state. |
| wcrtomb() | Converts wide character to multibyte sequence. |
| wctob() | Converts wide character to single byte. |
| Functions | Description |
|---|
| wcscat() | Concatenate wide strings. |
| wcschr() | Searches the first occurrence of a wide character in a wide string. |
| wcscmp() | Compares two wide strings. |
| wcscoll() | Compares two wide strings using locale. |
| wcscpy() | Copy wide string. |
| wcscspn() | Get span until character in wide string. |
| wcslen() | Returns the length of a wide string. |
| wmemcmp() | Compares two blocks of wide characters. |
| wcsncat() | Append characters from wide string. |
| wcsncmp() | Compare characters of two wide strings. |
| wcsncpy() | Copy characters from wide string. |
| wcspbrk() | Searches the first occurrence of any wide character of a wide string inside another wide string. |
| wcsrchr() | Searches the last occurrence of a wide character in a wide string. |
| wcsspn() | Get span of wide character set in wide string. |
| wcsstr() | Searches the first occurrence of a wide string inside another wide string. |
| wcstok() | Split a wide string into tokens. |
| wcsxfrm() | Transform wide string using locale. |
| wmemchr() | Locate wide character in block of wide characters. |
| wmemcpy() | Copy block of wide characters. |
| wmemmove() | Move block of wide characters. |
| wmemset() | Fill array of wide characters. |
| Functions | Description |
|---|
| wcsftime() | Formats time as wide string. |
| Types | Description |
|---|
| mbstate_t | Multibyte conversion state. |
| size_t | Unsigned integer type. |
| tm | Time structure. |
| wchar_t | Wide character type. |
| wint_t | Wide character integer type. |
| Macros | Description |
|---|
| NULL | Null pointer. |
| WCHAR_MAX | Maximum value of wchar_t. |
| WCHAR_MIN | Minimum value of wchar_t. |
| WEOF | Wide End-of-File. |
