Still I remember my First Project, which I have developed using c and perl.
Actuall that project was developed for Telebanking Domain.
In that project, If you see we have used Unix pipes very effectively.
we have an compiled Object of a C code and we have a separate perl script.
The C program executables directly talks with the hardware, which we have used for our telebanking project. But perl code was not developed to talk with the hardware.
In that scenario we have used unix pipes.
perl passes all the commmands in pipe. C reads all the commands from pipe and pass it to hardware.
In this way pipe acts as a interface between C program and perl program. really that software is good.