# Re: [Audyssey] Bgt stuff that confuses me

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----- Original Message ----- From: "Bryan Peterson" <bpeterson2...@cableone.net>
```To: "Gamers Discussion list" <gamers@audyssey.org>
Sent: Thursday, March 25, 2010 11:03 AM
Subject: Re: [Audyssey] Bgt stuff that confuses me```
```

```
I've never understood that either, probably why I've always gotten such poor grades in math. Homer: Hey, uh, could you go across the street and get me a slice of pizza?
```Vender: No pizza. Only Khlav Kalash.
```
----- Original Message ----- From: "Thomas Ward" <thomasward1...@gmail.com>
```To: "Gamers Discussion list" <gamers@audyssey.org>
Sent: Thursday, March 25, 2010 4:36 AM
Subject: Re: [Audyssey] Bgt stuff that confuses me

```
```Hi Dark,
Smile. Welcome to the wonderful world of resource management. Don't
feel too bad as this is an issue that comes up all the time with new
programmers, because they often think as you do that a number is just
a number and don't understand the difference between int, float, long,
short, double, etc.
Thing is with computers before you can actually store a value, like a
number, you have to allocate enough memory on the heap to store it in
memory. The value 3 requires a lot less memory than the value
3.14159265. For a small integer value like 3 you can use a short
integer which will create just enough space in memory to handle that
value. For a large floating point value like 3.14159265 you'll want a
double value which will create a much larger block of memory on the
heap for storage. While you could create all your numeric variables as
double you'll run into the problem of waisting memory needlessly and
waisting valuable system resources that could be used elsewhere. That
is why it is a good idea only to asign enough space on the heap that
you actually need rather than using the largest amount of memory
possible just to store a   small integer like 3.
As for your script questions remember in the main() function when you
but if you don't actually create that function somewhere in your
script that function doesn't exist. As it happens you create the
add_numbers() function after the main() function and it gets called by
main to add two numbers of type int. Does that make sense?
As far as the variables first and second you declared them as function
parameters in the declaration of your function like
int add-numbers (int first, int second)
which is perfectly legal and proper code. What this does is tell the
function that it requires two parameters of type int, and they must be
entered when the function is called like
int result = add_numbers (5, 7);
in order to perform the calculation. Otherwise without declaring first
and second as part of the function declaration you couldn't pass any
values or parameters to the function.

HTH

On 3/24/10, dark <d...@xgam.org> wrote:
```
```Hi.

Having already read through the tutorial once, I stil find myself mildly
confused on a couple of matters.

```
Firstly, all the stuff relating to doubled short or long intagers and bits and bytes. I'm rather uncertain why or when I would want to use variables such as int8, double, or short which relate to the size of bits and bytes.
```Shorely, a number is a number and can be written as such?

Secondly, I'm uncertain as to the difference betwene void functions and
return result functions, and I must confess I don't follow this example:

void main()
{
alert("Wow", "3 + 5 is... " + x + "!");
}
{
int result=first+second;

```
I can see that the alert will write the text string with the int x, however,
```hasn't the (3 + 5), already produced the result of 8 for x?

```
Also, I have absolutely no idea what the business involving "int first" and
```"int second" is all about, sinse how does bgt know what first and second
actually mean? it seems this function is working with a lot of intagers
```
which haven't been defigned successfully, but which work (I tried creating a
```secript with this and it printed fine).

Any thoughts on this would be appreciated.

```
```
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