When I run your example I get 
~/tmp/cperl> ./a.out
FIFO was successfully made!
Segmentation fault

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I get the segmentation fault (from the c program) when I start the perl script :(

Anyway, what is so different about this approach and simply using the number 63 ?

LuCa

In reply to Re^3: communication between C and perl by jeanluca
in thread communication between C and perl by jeanluca

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