Simple inheritance question.

[zukias]

#include <iostream>

using namespace std;

class BaseClass{
public:
    BaseClass():nValue(0){}
    void inc(){
        nValue++;
    }

    void print(){
    cout << "\nnValue of BaseClass object = " << nValue << ".\n";
    }
protected:
    int nValue;

};

class SubClass:BaseClass{
public:
    SubClass(){
    nValue = 1;
    }

private:
    int nValue2;


};


int main()
{
    BaseClass x1;
    x1.inc();
    x1.print();

    SubClass x2;
    x2.inc();
    x2.print();

    return 0;
}

I've just finished learning the basics about inheritance and thought I'd have a little play around. The above program returns the errors:

"error: 'void BaseClass::inc()' is inaccessible"
"error: within this context"
"error: 'BaseClass' is not an accessible base of 'SubClass'".
(and the same for the print() function)

This confuses me since I thought the whole idea of inheritance is that the functions & data of a base class can be used in its subclasses as if it were contained in the subclass.

Any help would be appreciated.

[vlad from moscow]

BaseClass was inherited as private by default for class definitions.

class SubClass:BaseClass {

So its public members became private members of the derived class and are not acceptable outside the derived class definition.

[MiiNiPaa]

To fix this: class SubClass: public BaseClass {

[zukias]

Oh dam of course! Thanks. :p