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difference between quit and exit

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Started by zer0wolf October 22, 2003 04:46 PM

14 comments, last by zer0wolf 20 years, 6 months ago

zer0wolf

1,022

Author

October 22, 2003 04:46 PM

I''m not super knowledgable on C/C++ (obviously) and there is one thing I''m not very sure on. I tried googling for a few minutes and didn''t get any help. What exactly is the difference between the usages of the exit() command and quit() command? --------------------------------------------------- laziness is the foundation of efficiency retrospiral.net | llamas! | megatokyo | gamedev.net | google

laziness is the foundation of efficiency | www.AdrianWalker.info | Adventures in Game Production | @zer0wolf - Twitter

Fruny

1,658

October 22, 2003 04:52 PM

"Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it." — Brian W. Kernighan

Anonymous

October 22, 2003 04:58 PM

And, you should probably not be using exit(). There are uses for it, but it is not an "elegant" way to terminate your program.

zer0wolf

1,022

Author

October 22, 2003 05:00 PM

Hmmm... the quit() command works only with VS then?

Whats the best way to exit if exit() isn''t the "most elegant" way of doing it?

---------------------------------------------------
laziness is the foundation of efficiency
retrospiral.net | llamas! | megatokyo | gamedev.net | google

laziness is the foundation of efficiency | www.AdrianWalker.info | Adventures in Game Production | @zer0wolf - Twitter

Anonymous

October 22, 2003 05:05 PM

bool global_app_running = false;void my_exit(){  global_app_running = false;}int main(int, char**){  global_app_running = true;  while(global_app_running)  {      // do stuff      if(AVARIABLE == ANOTHERVARIABLE)             my_exit();  }  return 0;}

brassfish89

122

October 22, 2003 05:05 PM

return 0 at the end of your main function.

zer0wolf

1,022

Author

October 22, 2003 05:07 PM

Thank you muchos. I will give it a whirl

---------------------------------------------------
laziness is the foundation of efficiency
retrospiral.net | llamas! | megatokyo | gamedev.net | google

laziness is the foundation of efficiency | www.AdrianWalker.info | Adventures in Game Production | @zer0wolf - Twitter

Anonymous

October 22, 2003 05:09 PM

You should design your program to have one entry point and one exit point. This is usually in main. So, if we make a hypothetical game:

int main(){     bool gameRunning = true;     do     {         processInput();         update();         render();         gameRunning = checkExitCondition();     }while(gameRunning);     return 0;}

The program starts and ends in one place, main. Obviously this is an oversimplified case, but you can see how it makes the code easy to follow. Also, you don''t have to worry that there is another place that the program can abruptly end and you have a chance to close files, clean up memory etc. That is why you use levels of abstraction in your program design.

Fruny

1,658

October 22, 2003 05:11 PM

zer0wolf

1,022

Author

October 22, 2003 05:11 PM

The main reason I''m asking because I''ve trying using the tuts on the libsdl page and the VS compiler is bitching at me about the exit() command in it.

---------------------------------------------------
laziness is the foundation of efficiency
retrospiral.net | llamas! | megatokyo | gamedev.net | google

laziness is the foundation of efficiency | www.AdrianWalker.info | Adventures in Game Production | @zer0wolf - Twitter

difference between quit and exit

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