Standard library header <cwchar>
From cppreference.com
This header was originally in the C standard library as <wchar.h>.
This header is part of the null-terminated wide and multibyte strings libraries. It also provides some C-style I/O functions and conversion from C-style Date.
Macros
| implementation-defined null pointer constant (macro constant) | |
| WEOF |
a non-character value of type wint_t used to indicate errors (macro constant) |
| WCHAR_MIN |
the smallest valid value of wchar_t (macro constant) |
| WCHAR_MAX |
the largest valid value of wchar_t (macro constant) |
Types
| conversion state information necessary to iterate multibyte character strings (class) | |
| unsigned integer type returned by the sizeof operator (typedef) | |
wint_t
|
integer type that can hold any valid wide character and at least one more value |
| calendar time type (class) |
Functions
String manipulation | |
| copies one wide string to another (function) | |
| copies a certain amount of wide characters from one string to another (function) | |
| appends a copy of one wide string to another (function) | |
| appends a certain amount of wide characters from one wide string to another (function) | |
| transform a wide string so that wcscmp would produce the same result as wcscoll (function) | |
String examination | |
| returns the length of a wide string (function) | |
| compares two wide strings (function) | |
| compares a certain amount of characters from two wide strings (function) | |
| compares two wide strings in accordance to the current locale (function) | |
| finds the first occurrence of a wide character in a wide string (function) | |
| finds the last occurrence of a wide character in a wide string (function) | |
| returns the length of the maximum initial segment that consists of only the wide characters found in another wide string (function) | |
| returns the length of the maximum initial segment that consists of only the wide not found in another wide string (function) | |
| finds the first location of any wide character in one wide string, in another wide string (function) | |
| finds the first occurrence of a wide string within another wide string (function) | |
| finds the next token in a wide string (function) | |
Wide character array manipulation | |
| copies a certain amount of wide characters between two non-overlapping arrays (function) | |
| copies a certain amount of wide characters between two, possibly overlapping, arrays (function) | |
| compares a certain amount of wide characters from two arrays (function) | |
| finds the first occurrence of a wide character in a wide character array (function) | |
| copies the given wide character to every position in a wide character array (function) | |
Multibyte/wide character conversion | |
| checks if the mbstate_t object represents initial shift state (function) | |
| widens a single-byte narrow character to wide character, if possible (function) | |
| narrows a wide character to a single-byte narrow character, if possible (function) | |
| returns the number of bytes in the next multibyte character, given state (function) | |
| converts the next multibyte character to wide character, given state (function) | |
| converts a wide character to its multibyte representation, given state (function) | |
| converts a narrow multibyte character string to wide string, given state (function) | |
| converts a wide string to narrow multibyte character string, given state (function) | |
Input/Output | |
| gets a wide character from a file stream (function) | |
| gets a wide string from a file stream (function) | |
| writes a wide character to a file stream (function) | |
| writes a wide string to a file stream (function) | |
| reads a wide character from stdin (function) | |
| writes a wide character to stdout (function) | |
| puts a wide character back into a file stream (function) | |
| switches a file stream between wide character I/O and narrow character I/O (function) | |
| reads formatted wide character input from stdin, a file stream or a buffer (function) | |
| (C++11)(C++11)(C++11) |
reads formatted wide character input from stdin, a file stream or a buffer using variable argument list (function) |
| prints formatted wide character output to stdout, a file stream or a buffer (function) | |
| prints formatted wide character output to stdout, a file stream or a buffer using variable argument list (function) | |
String conversions | |
converts a tm object to custom wide string textual representation (function) | |
| converts a wide string to an integer value (function) | |
| converts a wide string to an unsigned integer value (function) | |
| converts a wide string to a floating point value (function) | |