In java a final class is a class that cannot be derived. How
can you make a similar class in C++
- 1 Answers
- 3320 Views
- I also Faced
- E-Mail Answers
Answer / 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 |
When do you call copy constructors?
Is c++ proprietary?
What are references in c++?
What is the purpose of extern storage specifier?
How does list r; differs from list r();?
In which situation the program terminates before reaching the breakpoint set by the user at the beginning of the mainq method?
What is a buffer c++?
What is a flag in c++?
Given an array of size N in which every number is between 1 and N, determine if there are any duplicates in it. You are allowed to destroy the array if you like. [ I ended up giving about 4 or 5 different solutions for this, each supposedly better than the others ].
How do you declare A pointer to a function which receives nothing and returns nothing
Evaluate as true or false: !(1 &&0 || !1) a) True b) False c) Invalid statement
What programming language should I learn first?
STL 
