global variables in qbasic

hey im making a game in qbasic and i want to know if i can make global variables so all the SUBs have access to them so i dont have to pass like 50 variables every call. thanks in advance for the help.

BAM!

i went to that site and posted on the board but i didnt see it on there afterwards. also how do i reply to what someone else posted there? i dont like those kinds of boards very much....

Welcome to cprogramming.com. We use C and C++ here.

u forgot c#....

but i figured someone would know qbasic or be able to help me. at least this is a programming board and not, say, a cooking board. and the board is game programming, not specific to any language.

just for future reference, this is my 100th post.

Then again, the game programming board is under the General Programming Boards category, not C(++, #) Programming Boards section.

Let's be nice to him. :)

Now I have very little knowledge of QBasic. Just enough for my QBasic class in school. :p. But I believe if you declare variables outside a SUB then it is global.

Like this:

Code:

---

CLS
StringOne$ = "This is string one."
END

---

I'm thinking that StringOne$ is global. Or is it not?

well if i declare them as constants they work, but otherwise they dont. thats a step in the right direction, but i need them to not be constant. any other ideas?

sorry for bumping this up, but i couldnt edit (its been more than 1440 minutes)
i finally figured out how to make the global though, and i wanted every one to know,

DIM SHARED variables(x)

then just store the vars in there. i use constants to reference certain cells (ie i have CONST STRENGTH = 1; CONST DEFENSE = 2; et al, and then if i need to see their strength i just do PRINT variables(STRENGTH))

thanks for the help though (or lack there of, in some cases :p)

Quote:

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Originally posted by Geo-Fry
[B]sorry for bumping this up, but i couldnt edit (its been more than 1440 minutes)
i finally figured out how to make the global though, and i wanted every one to know,

DIM SHARED variables(x)

then just store the vars in there. i use constants to reference certain cells (ie i have CONST STRENGTH = 1; CONST DEFENSE = 2; et al, and then if i need to see their strength i just do PRINT variables(STRENGTH))

---

That's a rather inefficient method if you just want to store individual variables.

The correct syntax for global variables is:

Code:

---

COMMON global1, global2, somevar3, somevar4

---

Just plug in your global variables in a COMMON statement at the top of the file.

Hope that helps!

COMMON is only used if you are sharing variables between
QBasic programs. Since QB progs have a 64KB limit and are all in the small memory model, I can't see much use for it myself. COMMON helps in VBDOS so that your forms know about certain variables. I normally use the DIM SHARED or CONST to declare global variables.

QB is not nearly as elegant in dealing with multiple file or multiple module programs as C/C++.