Technical Interview Preparation

I know that this forum was intended for C++ and UNIX techies. But still I would feel, this one can also enhance our thinking horizons …
So while looking at the new features provided by Microsoft in it .Net Libraries, I was astronished how much money microsoft had spent to develop such architectural solutions and publishing for the users.
So I got an idea of using one such libraries which was a C# dll from my native C++ application without re-writing it.

Can anybody suggest me, an idea of doing it ??

Explain about Double pointing ?

What ares the differences between
a) enum
b) const
c) # defines. Compare the three ?

What is the difference between pointer and a reference?

can u assign a reference to Null?

How can I test whether my system’s byte order is big endian or little endian.?

How can I convert from big to little endian?