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   flushall

   Usage
   #include <stdio.h>
   int flushall(void);

   Description
   flushall flushes the I/O buffers for all open streams. Output  buffers
   are  written to their associated files and input buffers are  cleared.
   All  streams  remain open after call to flushall. Any  read  operation
   reads new data into the buffers.

   Example
   #include <stdio.h>
   main()
   {
   int totalflushed;
        totalflushed = flushall();
   }

   Return Value
   flushall returns the number of open streams.