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fgetws(3)

FGETWS(3)                  Linux Programmer's Manual                 FGETWS(3)

NAME
       fgetws - read a wide-character string from a FILE stream

SYNOPSIS
       #include <wchar.h>

       wchar_t *fgetws(wchar_t *ws, int n, FILE *stream);

DESCRIPTION
       The  fgetws() function is the wide-character equivalent of the fgets(3)
       function.  It reads a string of at most n-1 wide  characters  into  the
       wide-character array pointed to by ws, and adds a terminating null wide
       character  (L'\0').   It stops reading wide characters after it has en‐
       countered and stored a newline wide character.  It also stops when  end
       of stream is reached.

       The programmer must ensure that there is room for at least n wide char‐
       acters at ws.

       For a nonlocking counterpart, see unlocked_stdio(3).

RETURN VALUE
       The fgetws() function, if successful, returns ws.  If end of stream was
       already reached or if an error occurred, it returns NULL.

ATTRIBUTES
       For  an  explanation  of  the  terms  used in this section, see attrib‐
       utes(7).  allbox;  lb  lb  lb  l  l  l.   Interface Attribute Value  T{
       fgetws() T}   Thread safety  MT-Safe

CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C99.

NOTES
       The  behavior  of fgetws() depends on the LC_CTYPE category of the cur‐
       rent locale.

       In the absence of additional information passed to the  fopen(3)  call,
       it is reasonable to expect that fgetws() will actually read a multibyte
       string from the stream and then convert it to a wide-character string.

       This  function  is unreliable, because it does not permit to deal prop‐
       erly with null wide characters that may be present in the input.

SEE ALSO
       fgetwc(3), unlocked_stdio(3)

COLOPHON
       This page is part of release 5.02 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                               2019-03-06                         FGETWS(3)
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