When should you use multiple inheritance?
- 2 Answers
- 1220 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / munendra kumar
There are three acceptable answers: "Never," "Rarely," and "When the problem domain cannot be accurately modeled any other way."
There are some famous C++ pundits and luminaries who disagree with that third answer, but I will accept it.
Let's digress to consider this issue lest your interview turn into a religious debate. Consider an Asset class, Building class, Vehicle class, and CompanyCar class. All company cars are vehicles. Some company cars are assets because the organizations own them. Others might be leased. Not all assets are vehicles. Money accounts are assets. Real estate holdings are assets. Some real estate holdings are buildings. Not all buildings are assets. Ad infinitum. When you diagram these relationships, it becomes apparent that multiple inheritance is a likely and intuitive way to model this common problem domain. The applicant should understand, however, that multiple inheritance, like a chainsaw, is a useful tool that has its perils, needs respect, and is best avoided except when nothing else will do.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / neelam saini
There are three acceptable answers:- "Never," "Rarely," and "When the problem domain cannot be accurately modeled any other way."
Consider an Asset class, Building class, Vehicle class, and CompanyCar class. All company cars are vehicles. Some company cars are assets because the organizations own them. Others might be leased. Not all assets are vehicles. Money accounts are assets. Real estate holdings are assets. Some real estate holdings are buildings. Not all buildings are assets. Ad infinitum. When you diagram these relationships, it becomes apparent that multiple inheritance is a likely and intuitive way to model this common problem domain. The applicant should understand, however, that multiple inheritance, like a chainsaw, is a useful tool that has its perils, needs respect, and is best avoided except when nothing else will do.
| Is This Answer Correct ? | 0 Yes | 0 No |
What number of digits that can be accuratly stored in a float (based on the IEEE Standard 754)? a) 6 b) 38 c) An unlimited number
Is map ordered c++?
Which software is best for coding?
What are guid? Why does com need guids?
What is the use of bit fields in structure declaration?
pls help.. paper bills.. 1000, 500, 100, 50, 20, 10, 5, 1.. create a program that will count all the paper bills in the number being input.. example: enter a number: 3886 there is/are: 3 ->1000 1 ->500 3 ->100 1 ->50 1 ->20 1 ->10 1 ->5 1 ->1 example2: enter a number: 728 there is/are: 0 ->1000 1 ->500 2 ->100 0 ->50 1 ->20 0 ->10 1 ->5 3 ->1
Does there exist any way to make the command line arguments available to other functions without passing them as arguments to the function?
Write about the scope resolution operator?
What is iomanip c++?
Explain virtual destructor?
sizeof - is it a function or operator?
What is a dangling pointer in c++?
STL 
