Re: A new universe of Ada

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On 2022-09-26 08:20, Rick Duley wrote:

> I have Gnat Studio but I can't do anything at all unless I create a Project (whatever that is).  Even then, I can't write and run Hello_World unless I call it Main.  The concept of an IDE where I can step through a program checking changes in variable values as I go seems to have vanished.

That concept is called debugger. GDB for GCC (GNAT Ada is based in GDB). 
GDB never ever really worked except for little exercises. It still does 
not. So, forget about it.

> In short, I am lost and I can't find any material to help me find my way.

The project file is 3-liner:
----------------hello_world.gpr----->
project Hello_World is
    for Main use ("hello_world.adb");
end Hello_World;
<------------------------------------

No, you do not need main to be Main:

---hello_world.adb----------------->
with Ada.Text_IO; use Ada.Text_IO;
procedure Hello_World is
begin
    Put_Line ("Hello world!");
end Hello_World;
<----------------------------------

You still can compile and build without projects. But projects are much 
more comfortable.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de