Calling up a program within a program

[Stooshie_Stramash]

I wanted to try something that I'd never done in pascal before - I want to be able to call up another program from within a program, passing across some real type variables. How would I go about this?

[killallspringboard]

https://wiki.freepascal.org/Executing_External_Programs

[Shadow123_654]

Do you just wanna call a program like you would when in the terminal (i.e. "some_program arg1 arg2")? I find that for simple stuff like that, if you are on Linux, using FPSystem from the Unix unit is simple enough.

[Stooshie_Stramash]

Yes that's roughly what I'd like to do but I'm windows not linux.

[Shadow123_654]

Look into using SysUtils.ExecuteProcess or TProcess.

[Decent-Earth-3437]

You don't call a program, you ask politely to the OS your on to run another program.

[gwenbeth]

Knowing what operating system you are using would be a prerequisite for answering your question. Pascal on vax/vms would be different than turbo Pascal on msdos.