do a simple maths problem

Post by **deject** » June 18th, 2010, 20:50

Huh. That may be the compiler you're using or something because I'm pretty sure that it wasn't like that to begin with.

Baliame · Post by **Baliame** » June 18th, 2010, 20:50

It's not the compiler, check the link.

In fact, surprisingly the Microsoft Visual compiler is currently one of most convention-compliant compilers today.

Lawyered.

buzzmong · Post by **buzzmong** » June 18th, 2010, 20:56

Bubbles is correct.

C++ reads left to right for operations of the same precedence.

Baliame · Post by **Baliame** » June 18th, 2010, 21:02

buzzmong wrote:C++ reads left to right for operations of the same precedence.

While correct, it's entirely not what we were debating!

buzzmong · Post by **buzzmong** » June 18th, 2010, 21:25

Essentially, yes it is.

It would be best to show it in a parse tree so you can clearly see what's happening, but I cannot be fucked to draw one and have no intention of ever doing one again narf.

Post by **HereComesPete** » June 18th, 2010, 21:42

Okay, you all need to stop C++ock waving and make a main stream 5punk game that infects the minds of millions damn it!

Baliame · Post by **Baliame** » June 18th, 2010, 21:55

As a matter of fact it is a 2D engine I'm working on, it could be magically transform into a game if you can come up with something absolutely mind-blowing.

Buzz: I know it does this weird thing which has a name which absolutely escapes me, like for the problem above: 1 3 4 * - 7 +.

buzzmong · Post by **buzzmong** » June 18th, 2010, 21:57

How about a game of blowing minds? With air horns. Or vuvuulvuuzuzubzbbbzzzzzzzzzzzzbzzzzzzzzzzz thiniges.

Stoat · Post by **Stoat** » June 18th, 2010, 22:08

buzzmong wrote:How about a game of blowing minds? With air horns. Or vuvuulvuuzuzubzbbbzzzzzzzzzzzzbzzzzzzzzzzz thiniges.

[media]http://www.youtube.com/watch?v=7B2LPxggvqY[/media]

Mr. Johnson · Post by **Mr. Johnson** » June 18th, 2010, 22:26

You guys seen the new frontpage right?

buzzmong · Post by **buzzmong** » June 18th, 2010, 22:37

Stoat wrote: [media]http://www.youtube.com/watch?v=7B2LPxggvqY[/media]

Hahaha, that was brilliant!

Post by **HereComesPete** » June 18th, 2010, 22:43

Mr. Johnson wrote:You guys seen the new frontpage right?

THE BEES!

NOT THE BEES!

OH GOD THE BEES!

THEY'RE WEARING A BEAR SUIT!

Post by **FatherJack** » June 18th, 2010, 22:48

C++ does indeed give -4

It's documented as having + above - in its operator preferences, but actually treats them equally - perhaps, as deject mentioned, because they are essentially the same operation.

In terms of what I was taught, it was to never write equations ambiguously, or at least I learned that at some point. While I did maths into college level, it's later that I did programming, so I guess it's that methodology that has stuck with me.

cheeseandham · Post by **cheeseandham** » June 18th, 2010, 23:39

-4

and I'm right, so end of discussion

Baliame · Post by **Baliame** » June 18th, 2010, 23:41

Just to clear it up once and for all, C++ has 16 tiers for operators
1. Scope
2. Brackets and casts
3. Unary operations (negation, increment, logical NOT, pointer denomination, etc.)
4. Pointer resolution
5. Multiplication, division, modulo
6. Addition, subtraction
7. Shift
8. Less/greater than
9. Equal and not equal
10-11-12. Bitwise AND / Bitwise XOR / Bitwise OR
13-14. Logical AND / Logical OR
15. Conditional operator
16. Assignment (=, +=, *=...)

TL;DR Deej should consider using a proper compiler.

shot2bits · Post by **shot2bits** » June 19th, 2010, 10:27

Stoat wrote: [media]http://www.youtube.com/watch?v=7B2LPxggvqY[/media]

you cupcake!

this made me splutter tea over my new keyboard

Post by **deject** » June 19th, 2010, 17:32

You know what, I'm probably being a dumb spanner because I remember now that C++ will look at the entire expression first. It's Java that will do it wrong.

Anhamgrimmar · Post by **Anhamgrimmar** » June 19th, 2010, 19:51

Yes well, this is all to the good, but WHERE DID THE OTHER POUND GO?

Baliame · Post by **Baliame** » June 19th, 2010, 22:02

deject wrote:It's Java that will do it wrong.

I wouldn't be surprised, Java is evil.

Post by **FatherJack** » June 20th, 2010, 1:15

Stoat wrote: [media]http://www.youtube.com/watch?v=7B2LPxggvqY[/media]

Heh, I liked them poking through the door, but if only they were so tuneful.