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Sharing File Access, Channels?

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The Question is:

How to convert a Fortran logical unit number into a standard C file pointer?
Assuming a Fortran programme in which a valid file is open, how to access a C
 function requesting a argument of type FILE*.

The Answer is :

  Open the file with the shared access keyword, and use a second channel
  to the file. (Mixing language I/O accesses on the same channel is not

answer written or last revised on ( 14-JAN-2003 )

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