CBSE Class 12 Computers Inheritance Worksheet

1. Discuss the relationship between base and derived classes.

2. List and explain the various types of inheritance with examples.

3. Discuss the inheritability of public, private and protected members in

a. Public inheritance

b. Private inheritance

c. Protected inheritance

4. What is the effect of inheritance on the calling of

a. Default constructors and destructors

b. User‐defined constructors and destructors Explain with example.

5. Refer to Q8 of Assignment‐3. Derive two classes from Box – Gift‐wrapped box and Storage Box. Add the following functionalities to them:

a. Gift‐wrapped box – Color of wrapping paper (default as red and as taken from user)

b. Storage box – Nos. required (default as 1 and as taken from user)

1. What is the need for inheritance? What are various types of inheritance?

2. What are the 3 ways in which class can be derived?

3. What is abstract class? How does it differs from concrete class?

4. How are constructors invoked in the derived class?

5. Why the access to global variable is not possible in the derived class member function which is of same name as that of a private data member of the base class ?

6. Class “a” has public member x. When class “b” is derived from “a” publically can x be made private explicitly in class “b”?

7. Give example of multiple inheritance

8. Why are classes sometimes derived virtually?

9. Give the significance of protected members.

10. What is the size of the derived class object?

11. How does invoking of constructor differ in inheritance and containership?

12. Give an example of multi level inheritance .

13. What is the difference between friendship and derivation?

14. Class “a” is derived from class “b” which is derived from class “c”. What is the order of invoking of constructors and destructors of these classes ?

15. Differentiate between containership and inheritance

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