Defining array elements as different types?

[might]

Is it possible to define an array`s different layers as different types, classes?
I`m not sure but I think it may be done by templates, but how?
Would you please make me know how to do this or if there is any other existing way.
Thanks in advance.

[CornedBee]

What are array layers?

[kedaman]

vector is an existing way, if you mean layers as in generic programming, check out the STL at sgi.com

[might]

I couldn`t find the exact word, but I remember now : "element"
If an array is defined as theArray[3] ;
theArray[0] , theArray[1] , theArray[2] are the elements of theArray[3] , I think :o
Sorry :o

All I want to do is this:
Suppose:


class CLine {public: void DrawLine() {/*Draw a line*/}; };
class CArc{public: void DrawArc() {/*Draw an arc*/}; };


if an array has two elements Shapes[2]
Define the element Shapes[0] as CLine and Shapes[1] as CArc
How can this be possible? Or firstly, can this be possible? :(

[kedaman]

It is called polymorphism, take a look at this tutorial
http://newdata.box.sk/bx/c/
Btw, you should also read the chapters before just to make sure you understand some other important concepts.

[might]

Thanks a lot for your replies and interest , Kedaman, and also CornedBee for his interest.

I know polymorphism, because I started learning C++ with the online version of Teach Yourself C++ in 21 Days. :D
I have had the idea to use inheritance also. But to do this I have to create an empty base class that inherits CLine, CArc etc.

But here has been a problem: I have been using Visual Studio .NET Beta 1 and mostly it doesn`t let me access to the members of an object (it usually forgets the mission of the " . " for objects and "->" for pointers to classes. )It`s just a weird. So it has always made me mistaken. I thought that I was doing something wrong, even I did right.

Anyway, I will try polymorphism.

Thank you very much, again.