basics

If I have private data members in base class, what about my derived class? How do I write methods that use these private base class members... I know that making them public would solve the problem, but then what would be the point of inheritance, right? So, it is not the solution.
Like (sort of pseudo code)

Code:

---

class point {
private:
  int x, y;
public:
  int coord() { //whatever }
};
class point_shift : public point {
public:
  int coord_shifted() { //how do I use x and y here??? }
};

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create protected member functions in the base class to access the private data members or make the data members protected in base class.

Something as simple as

Code:

---

x GetX()
{
  return x;
}

// and then for y

y GetY()
{
  return y;
}

---

Code:

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BASE CLASS                                DERIVED CLASS

private in base class        -->    not accessible in derived class

protected in base class,
which means the member behaves
like a private member in base -->  accessible by functions in derived class, i.e. they
                                  have the same access as private members of derived

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Quote:

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Originally Posted by Shamino

Something as simple as

Code:

---

int GetX()
{
  return x;
}

// and then for y

int GetY()
{
  return y;
}

---

---

Yea something like that ;)

OK, thanks, I need some more reading on that.

lol my bad, I was thinking in object mode :D

Quote:

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OK, thanks, I need some more reading on that.

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Until then, substitute 'protected' for 'private', and you are good to go.

Just remember that substituting protected for private is usually not the best design.

Well, it is just an assignment and I am supposed to know how to access certain members and whether I can at all. Just an exercise.
Thanks.