Interrupt Question

I'm just messing around with a program right now. I want to set up the program in a while loop so it will continually run, but I want it to stop when I press a certain key. How do I set up an interrupt to do this?

State your OS and Compiler.

See the FAQ entry on reading key presses without waiting for a newline.
http://faq.cprogramming.com/cgi-bin/...&id=1043284392

Quote:

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How do I set up an interrupt to do this?

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In XP, you don't

In DOS, you hook the keyboard interrupt, but this would work just fine.

Code:

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while (!kbhit())
{
  ..run your loop
}

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I don't know if it works in console b/c frankly I've never coded console programs. I went from DOS to DX to MFC.

kbhit() works in my somewhat old version of Dev-C++; it's in <conio.h>.

[edit] If you want the loop to end only if a certain key is pressed (and not just any key), you might try something like this:

Code:

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while(!kbhit() || getche() != ' ') {

}

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[/edit]

I checked MSVC 2005 and kbhit() is in there. Originally I thought it was only in dos.h but I was wrong.

you could look into signals maybe in linux. They might be useful.

Signals for keyboard? Ok....