Weird problem with memory in Pascal.

[Leledumbo]

Teacher has told us that arrays in Pascal are counting from one

Actually, it counts from whatever index you specify.

Weird, that program wasn't crashing without this - also when I was reading/writing data and causing out of range.

That's because, through a coincidence, the memory might be pointing to an address that is write/read-able by your program (another variable for instance), though it's out of the array range.

[yarpen]

I know, but when I don't specify counting in array, it's from 1 to n.
I feel ashamed that I hasn't thought earlier about so easy and simple solution.
Anyway, thanks for your help.

[OpenLieroXor]

I know, but when I don't specify counting in array, it's from 1 to n.

No. In your code you used dynamic arrays, which are always 0-based. Look here: http://wiki.freepascal.org/DYNAMIC_ARRAY

The index of a dynamic array is ZERO based, ie. it must be whittin the range from 0 to (Length-1). It is NOT possible to change this to a ONE based system.

[mas steindorff]

I know, but when I don't specify counting in array, it's from 1 to n.
I feel ashamed that I hasn't thought earlier about so easy and simple solution.
Anyway, thanks for your help.

when in doubt, let pascal figure it out

for i:= low(myarry) to high(myarray) do ....