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Author Topic: Find the error in a beginner's program  (Read 14431 times)

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Offline persalteas

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Find the error in a beginner's program
« on: April 25, 2012, 07:59:41 am »
Hello, first I have a question: who programs with Grammer here ? Just Xeda ?


Then I would these programers to tell we where are my error(s) in this program:

It's a base converter from decimal. (it is supposed to be  ;D )

The display always starts with a value that I didn't ask for, and then the right value.

Code: [Select]
:.0:Return→B
:ClrDraw
:Line(1,5,9,95,6
:Line(0,6,9,95,6
:Text(8,5,"Base Converter
:/Text(18,0,"Base ?
:DispGraph
:expr(Input →G
:/Text(18,0,"Valeur Décimale ?
:DispGraph
:expr(Input →AC'
:/Text(30,0,"= "
:Text('°AC',G
:DispGraph
:Repeat getkey
:End
:If =15
:Goto B
:ClrDraw:DispGraph
:Stop

And then, I have some questions about the Input command:

- is there a mean to forbid other tokens than alphanumeric ? (like pressing a key [stat],[On] etc...)
- When should the "two-points" appear on the screen ? Before or after pressing the first key ?  (ow my syntax...  <_< )
- The text in the Input is displayed like with /Text(  , letter-by-letter. Is that normal ?
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Offline Sorunome

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Re: Find the error in a beginner's program
« Reply #1 on: April 25, 2012, 08:11:27 am »
Damn, grammer changed quite a lot since I last programmed with it O.o
And if these should be commented lines, they need a double-slash (//)
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Offline jsj795

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Re: Find the error in a beginner's program
« Reply #2 on: April 25, 2012, 08:29:15 am »
I believe Yeong also programs in grammer. I don't, so I can't really help you :(
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Offline Sorunome

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Re: Find the error in a beginner's program
« Reply #3 on: April 25, 2012, 09:25:06 am »
Yeah, Yeong is quite good at grammer :)
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Offline Hayleia

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Re: Find the error in a beginner's program
« Reply #4 on: April 25, 2012, 09:32:45 am »
Quote from: jsj795 on April 25, 2012, 08:29:15 am
I believe Yeong also programs in grammer. I don't, so I can't really help you :(
Quote from: Sorunome on April 25, 2012, 09:25:06 am
Yeah, Yeong is quite good at grammer :)
I believe he is also writing a tutorial (but in English), if you need help
(I am talking to persalteas, even if I quoted everyone but him :P)
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Offline persalteas

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Re: Find the error in a beginner's program
« Reply #5 on: April 25, 2012, 10:04:11 am »
Okay...

*persalteas poke Yeong...  (or Xeda, sure)
« Last Edit: April 25, 2012, 10:04:36 am by persalteas »
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Offline Yeong

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Re: Find the error in a beginner's program
« Reply #6 on: April 29, 2012, 07:54:00 pm »
I just saw this topic.
I'll have to leave soon, but I'll get you the answer by tomorrow ;)
EDIT: Actually, your code is not wrong, but it's input itself. It somehow stores "14" in A when I tried with number 255.
« Last Edit: April 29, 2012, 08:09:31 pm by TBO_Yeong »
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Offline persalteas

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Re: Find the error in a beginner's program
« Reply #7 on: April 30, 2012, 11:07:11 am »
Do you know how to solve the problem ?

storing 0 in A before the Input ?
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Offline Xeda112358

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Re: Find the error in a beginner's program
« Reply #8 on: April 30, 2012, 11:46:34 am »
Okay, I believe the problem is just that you have :expr(Input →AC' Input will not normally handle numbers >65535 x.x. I also changed a few things:
Code: [Select]
:.0:             ;This line gets ignored because it starts with "."
:Return→B
:ClrDraw
:Line(1,5,9,95,6
:Line(0,6,9,95,6
:Text(8,5,"Base Converter
:/Text(18,0,"Base ?
:DispGraph
:expr(Input →G
:/Text(18,0,"Valeur Décimale ?
:DispGraph
:expr(Input →A  ;
:/Text(30,0,"= "
:Text('°A,G
:DispGraph
:Repeat         ;Added a space here. Just a single space means it uses the last value
:getkey         ;"Repeat getKey" does not change ans
:End
:If =15
:Goto B
:ClrDraw:DispGraph
:Stop

By the way, it looks nice o.o
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Offline persalteas

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Re: Find the error in a beginner's program
« Reply #9 on: April 30, 2012, 12:06:28 pm »
OK, Thanks :)

but
Code: [Select]
:Repeat         ;Added a space here. Just a single space means it uses the last value
:getkey         ;"Repeat getKey" does not change ans
:End
Is one byte heavier...
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Offline Xeda112358

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Re: Find the error in a beginner's program
« Reply #10 on: April 30, 2012, 12:07:47 pm »
Yeah :/ But otherwise, your next line would not work:
Code: [Select]
If =15
Goto B
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Offline persalteas

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Re: Find the error in a beginner's program
« Reply #11 on: April 30, 2012, 12:09:22 pm »
euh....

yes, it works... That wasn't a problem, it worked fine...
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Offline Yeong

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Re: Find the error in a beginner's program
« Reply #12 on: April 30, 2012, 03:21:46 pm »
If Grammer works the way that xeda had not intended it to do, just understand: Grammer has its own AI.
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Offline persalteas

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Re: Find the error in a beginner's program
« Reply #13 on: April 30, 2012, 03:23:25 pm »
Just try it, you will see... The getkey is stored in Ans, even with my code... It works.

If you press enter, the program restarts, if you press another key, it exits.
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Offline Yeong

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Re: Find the error in a beginner's program
« Reply #14 on: April 30, 2012, 03:24:03 pm »
I think xeda think it didn't works because the slight hold of the key makes it look like it doesn't work.
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