GETWC(3) BSD Library Functions Manual GETWC(3)NAME
fgetwc, getwc, getwchar -- get next wide character from input stream
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdio.h>
#include <wchar.h>
wint_t
fgetwc(FILE *stream);
wint_t
getwc(FILE *stream);
wint_t
getwchar(void);
DESCRIPTION
The fgetwc() function obtains the next input wide character (if present) from the stream pointed at by stream, or the next character pushed
back on the stream via ungetwc(3).
The getwc() function acts essentially identically to fgetwc().
The getwchar() function is equivalent to getwc() with the argument stdin.
Extended locale versions of these functions are documented in getwc_l(3). See xlocale(3) for more information.
RETURN VALUES
If successful, these routines return the next wide character from the stream. If the stream is at end-of-file or a read error occurs, the
routines return WEOF. The routines feof(3) and ferror(3) must be used to distinguish between end-of-file and error. If an error occurs, the
global variable errno is set to indicate the error. The end-of-file condition is remembered, even on a terminal, and all subsequent attempts
to read will return WEOF until the condition is cleared with clearerr(3).
SEE ALSO ferror(3), fopen(3), fread(3), getc(3), getwc_l, putwc(3), stdio(3), ungetwc(3)STANDARDS
The fgetwc(), getwc(), and getwchar() functions conform to ISO/IEC 9899:1999 (``ISO C99'').
BSD March 3, 2004 BSD
Check Out this Related Man Page
FGETWC(3) Linux Programmer's Manual FGETWC(3)NAME
fgetwc, getwc - read a wide character from a FILE stream
SYNOPSIS
#include <stdio.h>
#include <wchar.h>
wint_t fgetwc(FILE *stream);
wint_t getwc(FILE *stream);
DESCRIPTION
The fgetwc() function is the wide-character equivalent of the fgetc(3) function. It reads a wide character from stream and returns it. If
the end of stream is reached, or if ferror(stream) becomes true, it returns WEOF. If a wide-character conversion error occurs, it sets
errno to EILSEQ and returns WEOF.
The getwc() function or macro functions identically to fgetwc(). It may be implemented as a macro, and may evaluate its argument more than
once. There is no reason ever to use it.
For nonlocking counterparts, see unlocked_stdio(3).
RETURN VALUE
The fgetwc() function returns the next wide-character from the stream, or WEOF. In the event of an error, errno is set to indicate the
cause.
ERRORS
Apart from the usual ones, there is
EILSEQ The data obtained from the input stream does not form a valid character.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
+------------------+---------------+---------+
|Interface | Attribute | Value |
+------------------+---------------+---------+
|fgetwc(), getwc() | Thread safety | MT-Safe |
+------------------+---------------+---------+
CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C99.
NOTES
The behavior of fgetwc() depends on the LC_CTYPE category of the current locale.
In the absence of additional information passed to the fopen(3) call, it is reasonable to expect that fgetwc() will actually read a multi-
byte sequence from the stream and then convert it to a wide character.
SEE ALSO fgetws(3), fputwc(3), ungetwc(3), unlocked_stdio(3)COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
GNU 2015-08-08 FGETWC(3)
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