In java a final class is a class that cannot be derived. How
can you make a similar class in C++
Answer Posted / cpp master
Using virtual base classes. The most derived class has to
initialize all the virtual base class in the inheritance
hierarchy. To make such a class simply create a empty class
with a private constructor and mark the class to be made
non derivable as the friend of that class. Now simply
public virtually derive the non derivable with the empty
class. Below is the example code:
class UnDerivable;
class dummy{
private:
dummy(){}
friend class UnDerivable;
};
class UnDerivable: virtual public dummy
{
};
//try deriving fro the underivable class
class deriveUnderivable:public UnDerivable
{
};
int main()
{
UnDerivable ud;
deriveUnderivable uud; //will give an error
return 0;
}
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
List the special characteristics of constructor.
Can comments be nested?
What is an incomplete type in c++?
write a function signature with various number of parameters.
How the virtual functions maintain the call up?
What is a c++ object?
What is jump statement in C++?
What are c++ storage classes?
What is the use of map in c++?
How new/delete differs from malloc()/free?
What is c++ in english?
Explain about Virtual Function in C++?
Is c++ still being used?
What is the output of the following program? Why?
What are exceptions c++?