embedded class and memory layout

[THY02K]

I have one class embedded in another class... For my application, I need to know the memory layout of the class.

For example:
class CA
{
int nX;
int nY;
CNode Node;
};

main()
{
CA * pA = new CA;

}

Let's say pA = 0x00003100. How can I determine the beginning location of CA's member?

Thanx in advance!