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From: Oliver Schmidt <ol.sc@web.de>
Newsgroups: comp.sys.apple2.programmer
Subject: Re: Ctrl-C Interrupt?
Date: Mon, 11 Dec 2023 19:10:41 -0000 (UTC)
Message-ID: <ul7mrh$2l8d7$1@solani.org>
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Hi Bill,

> I am working on a Apple II/e/c program with the cc65 C compiler. I can
> check for Ctrl-C in various places.

In this case I suggest to use
- kbhit() and cgetc() to detect the Ctrl-C
- exit() to quit if Ctrl-C was detected
- atexit() to run custom cleanup code

Not directly related but there's also doesclrscrafterexit() that allows you
determine if the user will be able to read output from your program after
exit - i.e. an error message. You can call it i.e. from your atexit()
function and call cgetc() if it returns true having the user acknowledge
that he has read the message.

Regards,
Oliver