C Language and Libraries Help (clang.hlp) (Table of Contents; Topic list)
_write
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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <io.h>, <errno.h>
 
  Syntax:    int _write( int handle, void *buffer, unsigned count );
 
  Returns:   the number of bytes actually written if successful, or -1
             if not.
             errno: EBADF, ENOSPC
 
  See also:  _read, fwrite
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