Help with arrays

Hi,

I know types by heart (I think) but the concept of how arrays work is lost on me. So basically, an array looks something like this:

Dim DataX(3) ;where 3 equals the number of data to be stored

For x = 0 To 3
DataX(x) = x
Next

;this FOR - NEXT loop seems to cycle through the array until the number of integers (3) reaches 3, then it goes "next"

I honestly don't see how this can store data. The tutorial says you can even store strings in an array, but this is all really complicated. I'm much better-suited to types it seems, but I'd sure love to know more about arrays.

Normally, you could have a single variable called for instance DataX:

DataX = 1

With arrays, you can enumerate this variable:

Dim DataX(3)

DataX(0) = 1
DataX(1) = 999
DataX(2) = 34
DataX(3) = 123

You could do this instead:

DataX0 = 1
DataX1 = 999
DataX2 = 34
DataX3 = 123

It would do the same, however, with a 'Dim' array, you can use another variable as the index:

p = 1
DataX(p) = 999

With a For..Next loop, the program loops a variable between a start and an end value

For p = 0 to 3
print p
Next

So, combine those two methods and you can fill an array with numbers:

Dim DataX(3)
For p = 0 to 3
DataX(p) = 999
Next

for p = 0 to 3
Print "DataX("+p+") = " + DataX(p)
next

Types are a more advanced method of storing/looping through data. However 'Dim' arrays are a standard feature of Basic languages and in some situations, they could come in handy.

sorry for my english but the expression correct is:
dim dataX(3)
for p = 0 to 2 ; not 3
dataX(p) = p
next

No, you can use dataX(3) also. The index range goes from zero to -in this case- three.