Scratch

It's an online site that converts text to ASCII art.  Just search Google for ASCII art. 

I would like people to see this post, so here it is again: 

scimonster wrote:

@amcerbu: Is "1" the first thing? According to OOO, it goes "PEMDAS" - Parentheses, exponents, multiplication/division, addition/subtraction. I want to put our multi-letter ops with ^s.

Sorry for being unclear.  The system I described ranks operations of higher precedence (things that happen first) with higher numbers. 

amcerbu wrote:

Code:

Operator:   ^ * / + - mod() % sqrt() log() sin() cos() tan()
Precedence: 4 2 2 1 1 2     3 2      2     2     2     2

The operation with highest precedence is exponentiation ( ^ ).  I would like to say again that the user must format multi-letter operations like this: sqrt(x), sin(x).  That way, the value of the multi-letter operation is taken care of before moving on.  Think about this:

//In this representation, position up or down indicates bracket hierarchy.  
//The highest line is the innermost bracket set.  
//In our project, the program will evaluate the diagram "top to bottom."  
                                    3      
               4 + 5           log(   )    
      2 / sin(       ) + sqrt(          )
4 + (                                     )

Together, this makes:
4 + ( 2 / sin( 4 + 5 ) + sqrt( log( 3 ) ) )

I listed multi-letter operations with a precedence of 2 because, in fact, they will execute before the rest of the "line" on which the appear.  Consider 2 / sin( 4 + 5 ).  sin( 4 + 5 ) will be calculated before performing the 2 / ___ part. 

Hope that clears up what I said earlier.

amcerbu wrote:

It's an online site that converts text to ASCII art.  Just search Google for ASCII art. 

I would like people to see this post, so here it is again: 

scimonster wrote:

@amcerbu: Is "1" the first thing? According to OOO, it goes "PEMDAS" - Parentheses, exponents, multiplication/division, addition/subtraction. I want to put our multi-letter ops with ^s.

Sorry for being unclear.  The system I described ranks operations of higher precedence (things that happen first) with higher numbers. 

amcerbu wrote:

Code:

Operator:   ^ * / + - mod() % sqrt() log() sin() cos() tan()
Precedence: 4 2 2 1 1 2     3 2      2     2     2     2

The operation with highest precedence is exponentiation ( ^ ).  I would like to say again that the user must format multi-letter operations like this: sqrt(x), sin(x).  That way, the value of the multi-letter operation is taken care of before moving on.  Think about this:

Code:

//In this representation, position up or down indicates bracket hierarchy.  
//The highest line is the innermost bracket set.  
//In our project, the program will evaluate the diagram "top to bottom."  
                                    3      
               4 + 5           log(   )    
      2 / sin(       ) + sqrt(          )
4 + (                                     )

Together, this makes:
4 + ( 2 / sin( 4 + 5 ) + sqrt( log( 3 ) ) )

I listed multi-letter operations with a precedence of 2 because, in fact, they will execute before the rest of the "line" on which the appear.  Consider 2 / sin( 4 + 5 ).  sin( 4 + 5 ) will be calculated before performing the 2 / ___ part. 

Hope that clears up what I said earlier.

I was thinking along the following code:

//scanning is defined as changing a variable by one until item(var)of[Problem list] = what you're scanning for
 
n = 1
forever{
  repeat until (not <Problem list contains item [n] of [OOO]>)
    scan for item n of OOO
    do operation with item (var - 1) of problem list, and item (n + 1) of problem list
    replace all three with result
  n = n + 1
}

Last edited by Hardmath123 (2011-05-23 01:14:50)

amcerbu wrote:

Sounds good!  I think that should work! 

Do you program in C++?  because the { } is a dead giveaway.

JavaScript 

And TI Basic

applejack wrote:

Objective-C 

Hardmath123 wrote:

amcerbu wrote:

Sounds good!  I think that should work! 

Do you program in C++?  because the { } is a dead giveaway.

JavaScript 

Like a chain list of things?

I can work on it, but it never works for me due to the large if else cascading structure.
Maybe I'll help.

What's [/offtopic] mean? And duh, we all use scratch. 

amcerbu wrote:

C++ and TI BASIC.  [/offtopic]

So who is gonna do the evaluation coding?

So, who wants to program the evaluation engine?  It will probably only be one person - if you look at Hardmath123's code above, it seems pretty simple.  The project is almost done...

Last edited by amcerbu (2011-05-24 16:37:45)

amcerbu wrote:

So, who wants to program the evaluation engine?  It will probably only be one person - if you look at Hardmath123's code above, it seems pretty simple.  The project is almost done...

No, I don't think it's actually that simple. Don't forget all the functions we have.

applejack wrote:

[offtopic] How do you pack as  much as you do into your sig? I only get 400 characters... Ive just managed to sqeeze all that's in my sig in    [/offtopic]

scimonster wrote:

applejack wrote:

What's [/offtopic] mean? And duh, we all use scratch. 

It means get back ontopic; discussing what we are supposed to be. 
[/offtopic]

Some of them are goo.gl links, which shorten the URL.

I'm making something that checks that brackets and parentheses are matched, but should I add it to an existing project?

Hardmath123 wrote:

PS: I added you to the active list. 

Thanks!

Last edited by scratcher7_13 (2011-05-25 08:27:25)

Bump?

School starts June 1 for, me, I won't be as active then  .

amcerbu wrote:

@scratcher7_13: Could you tell us what you're planning to do?  The idea was to post code in [code] boxes before programming.  That way, we can fix out any kinks in the program before you upload it.

Yes. I'm still working on the code.