I'm tearing my hair out trying to find how to just write a Hello World program in Prolog. I just want to create a program that runs like so:
> ./hw
Hello, world!
>
The problem is that every single example I can find works in a REPL, like so:
?- consult(hello_world).
% hello compiled 0.00 sec, 612 bytes
Yes
?- hello_world.
Hello World!
Yes
This is the same even with examples of compiled Prolog: the program still just drops into a REPL. This is obviously not much use for a "general-purpose" language. So, how do I write the traditional Hello World?