Constant pointers

If I have this

Code:

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const HermitCrab* t = &b;
b.GetShellSize();

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how can I make sure it compiles. Also if I have this

Code:

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              HermitCrab a(1);
              const HermitCrab b(3);
Will Compile    Code…
  (Yes/No)?
____________  1  HermitCrab* const q = &a;
                q->MoveIntoShell(8);
____________  2  const HermitCrab* p = &a;
                p->MoveIntoShell(8);
____________ 3  HermitCrab* const m = &b;
                m->MoveIntoShell(2);
____________ 4  const HermitCrab* r = &b;
                r->MoveIntoShell(8);
____________  5  const HermitCrab* p = &b;
                p = &a;

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are these answers right
1) No because the pointer is read only
2) Yes
3) No because the object is constant therefore it most have a const object pointer
4) Yes
5) Yes

>how can I make sure it compiles.
Hmm, define HermitCrab with a GetShellSize member function and define b to be an object of type HermitCrab.

>1) No because the pointer is read only
And what does that have to do with calling a member function on the pointed to object?

>2) Yes
Why?

>4) Yes
Why?

>5) Yes
Why?

Erm, it takes what - 30 seconds to actually type that into a small program and see if you get any 'you can't do that it's const' type error messages.