Re: [Dev-C++] protected and private in c++ classes

[Daniel G. <sp...@ho...>]

I don't think that is quite correct.

Without getting too nerdy, private specifies that the member variable or 
method (methods are usually public, not private) can only be accessed by a 
method of that class, and cannot be accessed directly.
So if I have a private member
int EmployeeID;
I cannot do

MyObject.EmployeeID = 12345;
Because it is private. What I need is a public method like this

void SetEmployeeID(int Num)
{
    EmployeeID = Num;
}
Then I can do MyObject.SetEmployeeID(12345);


Protected means the members are public to that class, but if a class is 
derived from it then they become private. e.g.

class Person
{
protected:
double DNASequence;
}

class Employee : public Person
{
    // class Employee now has
    // private :
    // double DNASequence;

}

Let me know if any of this sounds wrong.

Daniel


>From: Per Westermark <pw...@ia...>
>To: studioartoni <stu...@li...>
>CC: Dev...@li...
>Subject: Re: [Dev-C++] protected and private in c++ classes
>Date: Tue, 9 Mar 2004 11:15:18 +0100 (CET)
>
>Private is only for methods of the class.
>
>Protected are also available to all inherriting classes.
>
>/Per W
>
>On Tue, 9 Mar 2004, studioartoni wrote:
>
> > Excuse the question,
> > but which is the difference between 'protected' and 'private' in c++ 
>classes?
> > Thank you.
> >
> >
>
>
>
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