A second question about inheritance

[subjugater]

// the base class. No definition for ctor and dtor.
class base{
int x;
...
}

// the derived class
class derived: public base{
// the derived class has the ctor and dtor explicitly defined.
derived()
{
x = 100;
...
}
~derived();
...
}

My question is:

Is it legal to give the value of a variable of the base class in the derived class' ctor, like what I have shown in the above code snippet? Thank you!

[moorecm]

In that example, no. That's because x is is the private section of the base class. Try making it protected and then it would be legal. For more information, search for access specifiers.

http://www.cplusplus.com/doc/tutorial/classes/

[subjugater]

moorecm,

Thank you for your explanation!