fwprintf

Writes wide-character output to a stream under format control.

Library:LibC

Classification:ANSI

Service:Characters and Strings

Syntax

  #include <wchar.h> 
   
  int  fwprintf (
     struct _iobuf   *fp,
     const wchar_t   *format,
     ...);

fp: (IN) Points to the file to be written to (struct _iobuf is the same as FILE).
format: (IN) Points to the format control string. See Section 12.4, Wide-Character Print Format Control Strings.
...: (IN) Points to an argument for a conversion specifier. The number of arguments is determined by the format string.

If successful, returns the number of characters written. Otherwise, returns a negative value and sets errno to one of the following:

Decimal	Constant	Description
4	EBADF	The file descriptor is not a valid file descriptor open for writing.
5	ENOMEM	Insufficient storage space is available.
9	EINVAL	The format string contains insufficient arguments.
12	ENOSPC	No free space remains on the device containing the file.
24	EAGAIN	The O_NONBLOCK flag is set for the file descriptor, and the process cannot immediately perform the write operation.
28	EIO	A physical I/O error has occurred.
32	EPIPE	An attempt was made to write to a pipe or FIFO that is not open for reading by any process.
63	EINTR	A signal interrupted the write operation.
71	EFBIG	An attempt was made to write to a file that exceeds the maximum file size.
101	EILSEQ	A wide-character code that does not correspond to a valid character has been detected.