Prizm BASIC question
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I'll post a question whenever I need help. Smile

First of all, how does getKey work in Prizm?
Apparently, it doesn't work like TI's getkey.
I read the manual, but I still haven't got any clue.
You put GetKey value in a variable, like this:

GetKey->K

Then the value of K will contain the key pressed. For example, the EXE key has a value of 31.
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Oh. So I have to store getKey in variable?
Thanks.
yeongJIN_COOL wrote:
Oh. So I have to store getKey in variable?
Thanks.


Well, it's used exactly like with the 84+'s BASIC, so you can store it to a variable if you want to; either way, it can be used on it's own like a value holding the last key pressed.
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one more question:
This code gives me syntax error.


Code:

Lbl B
GetKey→K
If K=27
Locate 3,3,"HI
IfEnd
Goto B


it gives me error at If K=27 part.
yeongJIN_COOL wrote:
one more question:
This code gives me syntax error.


Code:

Lbl B
GetKey→K
If K=27
Locate 3,3,"HI
IfEnd
Goto B


it gives me error at If K=27 part.


Use "Then".
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oh. I have to use then?
Thanks
yeongJIN_COOL wrote:
oh. I have to use then?
Thanks


Yes, just like in TI-BASIC; however, you can't ever omit it, even for one line if blocks.
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Apparently, this doesn't work:


Code:

...codes...
If A=6
Then
Goto Q
IfEnd
A=7[thick arrow]Goto T


the label exists, but it gives me GO error. Anyone knows why?
Ok. The program gives me the error right here. D:


Code:

...codes...
If A=6
Then
Goto Q //Gives me error here
IfEnd
Lbl Q

what did I do wrong?
Well I would guess becuase the If A=6 command never reaches its respectable IfEnd. Don't know for sure, becuase I only spent a little time with Prizm basic, it annoys me.
@zeldaking: it does reach A=6. Even if it didn't it shouldn't give me GO:ERROR thingy. Is there something wrong with my code?
Let's think here the GO:Error is obvoiusly an error with some goto command, right? I know it reaches A=6 I am saying it never reaches the IfEnd so it messes the execution up. Maybe?
Edit:
You are right it shouldn't give you an error. I tried it on my Calc and it works fine, did you get the OS update? Maybe that has something to do with it. I don't know you should ask a smarter person than me.
I'll post the entire code(it's quite short.)


Code:

Lbl S
ClrText
Red Locate 4,2,"ASCII
Blue Locate 13,2,"WORLD
Yellow Locate 1,1,"XXXXXXXXXXXXXXXXXXXXX
Yellow Locate 1,3,"XXXXXXXXXXXXXXXXXXXXX
Yellow Locate 1,7,"XXXXXXXXXXXXXXXXXXXXX
Locate 5,4,"NEW
Locate 5,5,"CONTINUE
Locate 5,6,"QUIT
0→K
4→A
While K!=78
Red Locate 3,A,">
0→K:While K=0
Getkey→K
WhileEnd
Locate 3,A,"
A+(K=37 And A!=6)-(K=28 and A!=4)→A
WhileEnd
If A=6
Then
Goto Q //Error here
IfEnd

Lbl Q
ClrText
I only see one WhileEnd... is that the problem?
zeldaking wrote:
I only see one WhileEnd... is that the problem?


I only see one While. So I think we're clear.

Yeong, you are able to eliminate the If:Then:Goto:End by doing this:


Code:
If A=6 => Goto Q


It saves bytes and won't cause memory leaks that will inevitably slow your program.


There are two types of people in the world: those who can extrapolate data from incomplete data
Quote:
Code:
If A=6 => Goto Q

You don't need If :

Code:
A=6 => Goto Q

To avoid bugs, you shouldn't use Goto/Lbl.

Code:

A=6 => Goto Q

I'm actually aware of this "optimization" since I was in 8th grade. Very Happy
However, for goto, both code didn't work. All I remember is that my code were supposed to work if it was fx-9750g. (excluding all the new commands, of course.)
If you use the Locate command with a string you should try placing a quotation mark at the end. If you do that your errors may just vanish.
Is there a way to do substring with PRIZM basic?
  
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