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| Acmlm's Board - I2 Archive - Programming - Order of Operations |
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HyperLamer <||bass> and this was the soloution i thought of that was guarinteed to piss off the greatest amount of people Sesshomaru Tamaranian Level: 118 Posts: 7553/8210 EXP: 18171887 For next: 211027 Since: 03-15-04 From: Canada, w00t! LOL FAD Since last post: 2 hours Last activity: 2 hours |
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I know the basic order of operations when doing math, but that only covers the basic stuff (brackets, exponents, division, multiplication, addition and subtraction). Where do other operations like XOR and AND fit into this?  |
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knuck Hinox Banned until 19-58-5815: trolling, flaming, spamming, being a general fucktard... Level: 62 Posts: 1683/1818 EXP: 1894574 For next: 90112 Since: 03-15-04 Since last post: 14 hours Last activity: 9 hours |
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| I think those operators are the last thing to be calculated. Like, if the equation is X²-2/3 AND Y, it'd go (X²-2/3) AND Y I can be wrong though. |
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mcw Red Paratroopa Level: 17  Posts: 136/164 EXP: 22756 For next: 1987 Since: 07-08-05 From: don't you want my a/s too? Since last post: 8 hours Last activity: 5 hours |
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| i remember seeing a chart showing the exact order of.. everything. it was nice, i wish i remembered the url. but to be safe, just use parenthesis. but knuck is right, it's after all the math operations get figured out. (edited by mcw on 10-08-05 11:24 PM) |
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HyperLamer <||bass> and this was the soloution i thought of that was guarinteed to piss off the greatest amount of people Sesshomaru Tamaranian Level: 118 Posts: 7556/8210 EXP: 18171887 For next: 211027 Since: 03-15-04 From: Canada, w00t! LOL FAD Since last post: 2 hours Last activity: 2 hours |
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| Makes sense, but what about when there are multiple expressions, like 2 + 2 XOR 7 AND 3? | |||
neotransotaku Baby Mario 戻れたら、 誰も気が付く Level: 87 Posts: 3951/4016 EXP: 6220548 For next: 172226 Since: 03-15-04 From: Outside of Time/Space Since last post: 11 hours Last activity: 1 hour |
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| logical comes after arithmetic, and logical is evaluated left to right--this is how lazy evaluation works... so, for your statement the order is ((2 + 2) XOR 7) AND 3 |
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rg_ Goomba Level: 8  Posts: 22/26 EXP: 1964 For next: 223 Since: 03-27-05 Since last post: 21 hours Last activity: 12 hours |
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| It's called operator precedence and it's language-dependent. Google it for your favourite languages. | |||
beneficii Lakitu Level: 36 Posts: 546/567 EXP: 299656 For next: 8454 Since: 06-27-04 From: Cordova, TN, USA Since last post: 14 hours Last activity: 6 hours |
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| HH, Just do it like I do: use parantheses.  Ha ha! |
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aioria1981 Ninji Level: 20  Posts: 163/234 EXP: 36701 For next: 5738 Since: 07-20-05 From: Viña del Mar, Chile Since last post: 5 days Last activity: 5 days |
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| In which language are you working? | |||
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HyperLamer <||bass> and this was the soloution i thought of that was guarinteed to piss off the greatest amount of people Sesshomaru Tamaranian Level: 118 Posts: 7594/8210 EXP: 18171887 For next: 211027 Since: 03-15-04 From: Canada, w00t! LOL FAD Since last post: 2 hours Last activity: 2 hours |
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Well, C technically, but I'm writing code to parse equations so it really doesn't make much difference. And I can't be sure people will use brackets.  |
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Squash Monster New Age Retro Hippie Togateiru Fohku Kohgeki!! GRUNGE no HAMSTER otona bite Peace love and turnpike! Level: 40 Posts: 665/677 EXP: 430507 For next: 10802 Since: 03-15-04 From: Maryland (of the Country Between Canada and Mexico) Since last post: 5 hours Last activity: 5 hours |
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| The cplusplus.com tutorial has some coverage of order of operations. All that I can give you that's not horribly well-known is that and takes precedence over or. If it helps to remember: In boolean algebra, and is represented like multiplication. Or is represented like addition. Those two operators work exactly the same as their boolean counterparts when you're using ones and zeroes for true and false, so it's easy to remember. Yes, 1 + 1 = 1. Deal with it. |
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