mini MATLAB in Flash ;)

[amen0]

hi all just wanna see a flash application that can evaluate a math. expression
like
>>2+8-(5*3)
>>ans=
-5
>>sin(pi*3/2)+3
>>ans=
2
let's see ...
only to make it simple make only the arithmetic operation
as for me i can do the first one coz i programmed it in C# long ago and it's easy but the seconde i think is the Challenges.
ok guys let's see what u can do ...

[Laguana]

Is this supposed to be in 25 < lines of code? 'Cause i've made a calculator already (works in base 12 :P) but I'm pretty sure it's more than 25 lines. Also, there's a math.eval function someone's put on layer51 which works with pretty much everything, which is pretty cool. It's certainly more than 25 lines.

[amen0]

hi, can u show us ur .swf file.

[Laguana]

Well, it's at http://thor.prohosting.com/laguana/B12Calc.swf. It's still buggy i think, 'cause i was just messing 'round with it. Also, it uses crazy symbols 'cause me and my friends made up our own base 12 notation :P

If i recall, | is a decimal place, so 1|2 is 1.2, in base 12, so it's 1 and 2 12ths. V is 10, X is 11. ~ is the negative button, so pressing 1 then ~ should make it -1. The other symbols should be recognised already. It works fine for single operations, and follows order of operations, but brackets break it really easially.

[Morg]

Slightly off the topic...

Which is correct?
4+5*6=54
or
4+5*6=34

???

I keep wondering about this.. Conventional calclators (as in Windows calculator) show 54 as being correct... YET, scientific calculators, apply BODMAS to the equation before working it out...

If anyone knows, please let me know too...

[amen0]

well Laguna this is totally different for what i m asking for
have'nt u work in the MatLap Program
it's like this
ur input is a string
>> 2*6-3
then the program respond 9
u know not input are buttons ( ur calculator is too easy to make) sorry but it's not the challenge i m asking for

[invader]

Originally Posted by Morg

Slightly off the topic...

Which is correct?
4+5*6=54
or
4+5*6=34

???

I keep wondering about this.. Conventional calclators (as in Windows calculator) show 54 as being correct... YET, scientific calculators, apply BODMAS to the equation before working it out...

If anyone knows, please let me know too...

definitely not off topic. the order of operations is imperitive for a calculator that allows input strings. basic calculators that perform one operation at a time (such as the windows calculator) don't need to worry about the order of operations, as they only compute two numbers at a time.

the equation (4+5*6) is ALWAYS equal to 34. the only reason basic calculators would return 54 is user error (it is up to YOU to enter the numbers in the right order).

aren't challenges supposed to be started with a working example? it's always suspicious when people describe a complicated task, but don't put forth the effort to do it themselves. it makes me think the originator is posting his/her CS homework assignment hoping someone will do the work for him/her for free.

[Morg]

Hey Invader.

Yea, I spoke to one of my old math teachers yesterday... He said the same thing. If theres no brackets, then start at the left, and run through it normally.

Thanks for the response! Much appreciated!

[amen0]

oh yeah this thread is about calculation and Math Calculator, LOL

[Morg]

Ok, so back to the challenge:

amen0, you are looking for a basically 2 textfields; the ones an input field and the other an output field? You type a long equation in there, and then hit answer to see the program work it out for you?

Have you done one already?