[geeks] C++ inner workings

[Joshua D Boyd]

I'm trying to figure out the inner workings of C++.  I'm wondering if any one
has any online documents they could point me to.

Specifically, I'm thinking about inheritance.

For instance:
class A {
	virtual read();
}

class B : A {
	read();
}

How does it know which read to call?  I can think of some possible ways to 
implement this functionality, but I want to know what actually occurs.

In case people think I'm just pretending I know ways to encourage people to
help me with homework, I'll give you one way.

Imagine:

typedef void (*FNC_TYPE)(void);
struct A {
  FNC_TYPE read;
}

struct B {
  FNC_TYPE read;
  A a;
}

Then the initializer (possibly a macro if I was actually writing the above
code to fake inheritence in C) would set the read pointer to the proper read
function.  At least, that is one thought on implementing this.  Propably a 
bad one though.

-- 
Joshua D. Boyd