Where are declared and how to make build these c identifiers?

[Cleverson Casarin Uliana]

Em 24/02/2019 11:34, Adam D. Ruppe via Digitalmars-d-learn escreveu:
> Those don't have printable characters associated, so they all look the 
> same. Try writeln(cast(int) code)  - casting it to int so you can see 
> the number - and you should see the different results.
> 
> Or even
> 
>   terminal.writeln("You pressed ", cast(KeyboardEvent.Key) ch);
> 
Thanks much, it works great.

Greetings,
Cleverson