fgetwc(3C)						   Standard C Library Functions 						fgetwc(3C)

NAME

       fgetwc - get a wide-character code from a stream

SYNOPSIS

       #include <stdio.h>
       #include <wchar.h>

       wint_t fgetwc(FILE*stream);

DESCRIPTION

       The  fgetwc() function obtains the next character (if present) from the input stream pointed to by stream, converts that to the correspond-
       ing wide-character code and advances the associated file position indicator for the stream (if defined).

       If an error occurs, the resulting value of the file position indicator for the stream is indeterminate.

       The fgetwc() function may mark the st_atime field of the file associated with stream for update. The st_atime  field  will  be  marked  for
       update  by  the	first  successful  execution  of fgetwc(), fgetc(3C), fgets(3C), fgetws(3C), fread(3C), fscanf(3C), getc(3C), getchar(3C),
       gets(3C), or scanf(3C) using stream that returns data not supplied by a prior call to ungetc(3C) or ungetwc(3C).

RETURN VALUES

       Upon successful completion the fgetwc() function returns the wide-character code of the character read from the input stream pointed to	by
       stream converted to a type wint_t.

       For  standard-conforming (see standards(5)) applications, if the end-of-file indicator for the stream is set, fgetwc() returns WEOF whether
       or not the stream is at end-of-file.

       If a read error occurs, the error indicator for the stream is set, fgetwc() returns WEOF and sets errno to indicate the error.

       If an encoding error occurs, the error indicator for the stream is set, fgetwc() returns WEOF, and errno is set to indicate the error.

ERRORS

       The fgetwc() function will fail if data needs to be read and:

       EAGAIN	     The O_NONBLOCK flag is set for the file descriptor underlying stream and the process would be delayed in the fgetwc()  opera-
		     tion.

       EBADF	     The file descriptor underlying stream is not a valid file descriptor open for reading.

       EINTR	     The read operation was terminated due to the receipt of a signal, and no data was transferred.

       EIO	     A	physical  I/O  error has occurred, or the process is in a background process group attempting to read from its controlling
		     terminal and either the process is ignoring or blocking the SIGTTIN signal or the process group is orphaned.

       EOVERFLOW     The file is a regular file and an attempt was made to read at or beyond the offset maximum associated with the  corresponding
		     stream.

       The fgetwc() function may fail if:

       ENOMEM	 Insufficient storage space is available.

       ENXIO	 A request was made of a non-existent device, or the request was outside the capabilities of the device.

       EILSEQ	 The data obtained from the input stream does not form a valid character.

USAGE

       The ferror(3C) or feof(3C) functions must be used to distinguish between an error condition and an end-of-file condition.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |ATTRIBUTE TYPE		     |ATTRIBUTE VALUE		   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe with exceptions	   |
       +-----------------------------+-----------------------------+

SEE ALSO

       feof(3C),  ferror(3C), fgetc(3C), fgets(3C), fgetws(3C), fopen(3C), fread(3C), fscanf(3C), getc(3C), getchar(3C), gets(3C), scanf(3C), set-
       locale(3C), ungetc(3C), ungetwc(3C), attributes(5), standards(5)

SunOS 5.11							    15 Oct 2003 							fgetwc(3C)