perlvariable and Cprogram

[BCAL]

Hi,

In my perl program i am calling a c_program. This c_program is waiting for
input which I generate in my perlscript.
How do I pass the perlvariable to my c_program and let the perlscript
continue.

thnx in advance, joe

--

 

[nobull]

In my perl program i am calling a c_program. This c_program is waiting for
input which I generate in my perlscript.
How do I pass the perlvariable to my c_program and let the perlscript
continue.

Usually you'd use the pipe syntax of open().

open( my $subrocess, '|-', $program ) or die "Can't spawn $program:
$!";
print $subprocess "$perlvariable\n";

I'm assuming here that the program is not reliant on an EOF condition
on it's STDIN before it does its thing.

If it is then you need to use lower level pipe/fork/exec since close()
will wait for the subprocess.

Since this appears to be a question about interprocess commumication.
I humbly suggest you should have consulted the manual "Perl
interprocess communication" that comes with Perl.

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