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    The following form allows you to view linux man pages.

    Command:

    ungetwc

    
    
    

    SYNOPSIS

           #include <wchar.h>
    
           wint_t ungetwc(wint_t wc, FILE *stream);
    
    
    

    DESCRIPTION

           The   ungetwc()  function  is  the  wide-character  equivalent  of  the
           ungetc(3) function.  It pushes back a wide character  onto  stream  and
           returns it.
    
           If wc is WEOF, it returns WEOF.  If wc is an invalid wide character, it
           sets errno to EILSEQ and returns WEOF.
    
           If wc is a valid wide character, it is pushed back onto the stream  and
           thus  becomes available for future wide-character read operations.  The
           file-position indicator is decremented by one or more.  The end-of-file
           indicator is cleared.  The backing storage of the file is not affected.
    
           Note: wc need not be the last wide-character read from the  stream;  it
           can be any other valid wide character.
    
           If  the implementation supports multiple push-back operations in a row,
           the pushed-back wide characters will be read in reverse order; however,
           only one level of push-back is guaranteed.
    
    
    

    RETURN VALUE

           The  ungetwc()  function returns wc when successful, or WEOF upon fail-
           ure.
    
    
    

    ATTRIBUTES

       Multithreading (see pthreads(7))
           The ungetwc() function is thread-safe.
    
    
    

    CONFORMING TO

           C99.
    
    
    

    NOTES

           The behavior of ungetwc() depends on the LC_CTYPE category of the  cur-
           rent locale.
    
    
    

    SEE ALSO

           fgetwc(3)
    
    
    

    GNU 2013-12-09 UNGETWC(3)

    
    
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