Perl variable and C program

[Willem]

Hi,

I've got difficulties with IPC in Perl. In my script a variable is
given to an c program. so far so good. Now I want to be interactive
with the c program and get back to my script when I type -1.
The next variable is then launched to my c program... and so on.
My problem is that I cannot be interactive with my c program.
Solutions??

thx , Willem