• NAME
  
  fclose - close a stream
• SYNOPSIS
  
  #include <stdio.h>
  
  int fclose(FILE * fp );
• DESCRIPTION
  
  The fclose () function will flush the stream pointed to by fp (writing any buffered output data using fflush(3) ) and close the underlying file descriptor.
• RETURN VALUE
  
  Upon successful completion 0 is returned. Otherwise, EOF is returned and the global variable errno is set to indicate the error. In either case any further access (including another call to fclose ()) to the stream results in undefined behavior.
• ERRORS
  

  EBADF

  The file descriptor underlying fp is not valid.

  
  
  The fclose () function may also fail and set errno for any of the errors specified for the routines close(2) , write(2) or fflush(3) .
• CONFORMING TO
  
  C89, C99.
• NOTES
  
  Note that fclose () only flushes the user space buffers provided by the C library. To ensure that the data is physically stored on disk the kernel buffers must be flushed too, for example, with sync(2) or fsync(2) .
• SEE ALSO
  
  close(2) , fcloseall(3) , fflush(3) , fopen(3) , setbuf(3)
• COLOPHON
  
  This page is part of release 3.19 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.

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