Dwedit's Board

Vash The Stampede · 2005-12-22 8:02:21 pm

Basic as in simple. I'm trying to create an IF statement and having a lot of trouble. I want it to be IF 1<B<5, but it won't let me have the two signs. Also, how can I have it so only integers are allowed to be entered into prompts and inputs?

Quietust · 2005-12-23 12:52:51 am

1. IF 1<B AND B<5

2. Depends on the calculator. On the 85, you can't force it to accept only integers (you either tell it to accept numbers or strings; for the former, it'll evaluate it as an expression and 'crash' if you give it a bad input), though the later calculators probably allow you to be more strict.

leofox · 2005-12-23 3:53:40 am

Also, how can I have it so only integers are allowed to be entered into prompts and inputs?

Code:

Repeat X=int(X
Prompt X
End

This will keep on doing prompt until X is integer. You can add stuff like a message to tell you to only add integers if a non integer value is inputted, or ClrHome to clear the screen every time it asks again (so your screen doesnt get flooded with 'X?')

Quietust · 2005-12-23 8:18:51 pm

On the older calculators (85, 86), you can't reference undefined variables, so you need to resort to something like this:

Code:

Prompt X

While X≠int(X
Prompt X
End

leofox · 2005-12-24 3:02:31 am

nah, you can always use 0->X before doing the repeat loop, to define that variable.

Quietust · 2005-12-24 5:34:41 pm

In that case, 0.1->X would work a bit better, but the overall effect is the same (though it'd take a few more bytes of code).

leofox · 2005-12-25 1:45:43 am

if you use Repeat it'll run at least once anyway. Repeat only checks at the end of the loop, so by then X will already exist.

Vash The Stampede · 2005-12-29 8:49:09 pm

I have an 83+ and I'm just finding something to do during math class. I'll definitely try these after I'm tired of my PSP.

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#1 2005-12-22 8:02:21 pm

Basic Programming

#2 2005-12-23 12:52:51 am

Re: Basic Programming

#3 2005-12-23 3:53:40 am

Re: Basic Programming

Code:

#4 2005-12-23 8:18:51 pm

Re: Basic Programming

Code:

#5 2005-12-24 3:02:31 am

Re: Basic Programming

#6 2005-12-24 5:34:41 pm

Re: Basic Programming

#7 2005-12-25 1:45:43 am

Re: Basic Programming

#8 2005-12-29 8:49:09 pm

Re: Basic Programming

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