Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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  Include:   <stdio.h>
 
  Syntax:    int setvbuf( FILE *stream, char *buffer,
                          int mode, size_t size );
             mode: _IOFBF, _IOLBF, _IONBF
 
  Returns:   0 if successful, or a nonzero value if an illegal type
             or buffer size is specified.
 
  See also:  fclose, fflush, fopen, setbuf
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