How to prevent a base class from inheritance in C++?

Question

I don't want to make the base class from being derived to a new class. Is there any way to achieve this? I want to tell the compiler that you can't inherit the base class just like a final keyword in java

Not to be picky, but if a class can't be derived it can't be a base class, — anastaciu, Feb 17 '20 at 12:39
See this also https://www.interviewsansar.com/stop-a-class-to-be-inherited-cpp/ and this https://www.tutorialspoint.com/how-to-prevent-class-inheritance-in-cplusplus — I_Al-thamary, Feb 17 '20 at 12:46
@IonutAlexandru one consequence of making the constructor private is that you cannot inherit from the class, but this does not mean that when you want a final class you should make the constructor private. A private constructor has other consequences — 463035818_is_not_an_ai, Feb 17 '20 at 13:17
So guys, it seems declaring the class is final is the only option to prevent derived class from it — mohammed_thoyyib_tk, Feb 19 '20 at 16:11

score 5 · Answer 1 · answered Feb 17 '20 at 12:34

5

You can mark the class as final to prevent derivation from it. E.g:

class A final { ... };

answered Feb 17 '20 at 12:34

Maxim Egorushkin

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Just in case I would mention that `final` is available since c++ 11 – mvidelgauz Feb 17 '20 at 12:35

How to prevent a base class from inheritance in C++?

1 Answers1