Can I keep a certain functions from being inherited in C++
Sample code
#include <iostream>
using namespace std;
class Base
{
public:
virtual void Func()
{
cout << "\nIn base func";
}
};
class Derived : public Base
{
public:
void Func()
{
cout << "\nIn derived";
}
};
class Derived2 : public Derived
{
public:
void Func()
{
cout << "\nIn derived2";
}
};
int main()
{
Base* lnewbase = new Derived2();
lnewbase->Func();
return 0;
}
As an example, in the above code, 开发者_运维知识库I do not want Func() of Derived to be inherited (seal in C#) which is why there is no virtual keyword although I am aware that it does not change anything in this case. Is there any way to disallow that function to be inherited while making sure it remains a public method?
No; C++ has no equivalent to C#'s sealed
modifier.
There is nothing you can do.
Once you make a function in a base class virtual, there's nothing that can be done to get rid of that aspect of it. I can only think of a few things to almost get around it:
- Don't make it virtual;
- Make a new, public, non-virtual function in
Derived
that does what you need.
However, in either case, Derived2
will still be able to make its own version of Func()
, which will give you the same problem.
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