Answering a Query in C, after perfoming system call...

Question

Hi... I did an application that create a partintion and format the disk using system calls...

In the middle of the process there is a query asking to type the size of the disk... What can i do in my application in order to automaticly answer that query??

can you please help me?

Answer 1

fortunately, There is nothing you can do. :)

Answer 2

Depending on your operating system (windows can do it for instance) you can have the stdin for the programmed redirected to come from an output of your program.

Answer 3

Maybe you can use system() do run utilities like expect to control the process

Answer 4

This is certainly possible with, for instance libexpect but I never tried it (but Google found what seems to be a good example). On my Debian machine, man libexpect says:

    libexpect - programmed dialogue library with interactive programs

    This  library  contains functions that allow Expect to be used as a Tcl
    extension or to be used directly from C or C++ (without  Tcl).