OOPS Interview Questions

1. Explain the different forms of Polymorphism.


2. What is the race condition?


3. Why C?


4. What is OOPS?


5. What are enumerators? and what are in-line functions? giv ans with eg.


6. what is the use of procedure overriding


7. What are the major considerations related to well-written multi-threaded applications?


8. Void pointer


9. Array Address


10. What is global constructor?
11. What is the difference between ++*p and (*p)++


12. Which languages are included in object based languages other than VB and java script


13. difference between data abstraction & encapsulation.


14. What is the difference between implicit function & explicit function.


15. Explain the Polymorphism principle.


16. What is the use/advantage of function overloading


17. why friend function cannot be used to overload the assignment operator?


18. how to convert roman number into decimal number


19. is it ternary operator in c++?

20. What is the difference between docking container and splitter container?What is tree display?Explain with sample prgms.


21. what is the difference between encapsulation and datahiding.explain with example


22. What are data model and class model in Object Oriented Approach specially in C++?


23. difference between object-oriented programming and procedure oriented programming


24. what is the memory allocation for pointer?


25. Explain the Inheritance Principle


26. what is factory class?


27. Describe the principles of OOPS


28. Why do you need abstraction?


29. Can we inherit private members of class ?


30. what is size of class having no variable & 1 function which returns int

31. how macro execution is faster than function ?


32. while copying the objects if you say X a = b and asssume that '=' operator is overloaded then what it will call, a copy constructor or operator overloading function


33. What is VOLATILE/Mutable in c++


34. How do you differentiate between a constructor and normal function?


35. Which languages are included in object based laguages other than VB and java script


36. What are the advantages of Object Oriented Modeling?


37. what are the differences between class anad object?


38. Does C also supports abstraction


39. Explain the Encapsulation principle


40. Why C or C++ Stack index starts from 0.

41. what is difference between void and null pointer. is it same?


42. How do you differentiate a constructor from a ordinary function?


43. What is linked list? Explain with example program


44. What are these three elements typing, persistence, and concurrency in oop approach while studying system analysis and design?


45. what is ASSERT STATEMENTS?

46. Define Inteface , Implement a class , method , clearly with simple examples , Instance class


47. what is dangling pointer?where it is used ? what are the advantages?


48. what is the difference between dos & windows?what is the use of overloading?


49. what is the similarities between macro and function?


50. What is the difference between instance and object?
51. how exactly the servlet object will create in java language?


52. can we create a object of Base class?..If we can not create a object of base class then why we need Abstract class?


53. i want some concepts in abap oops including alvs with oops


54. 1.why do we need encapsulation?2. what is a class in C++ analogous to in C


55. how to implement the runtime polymorphism using c++. examples.


56. What is stack unwidening


57. What is the implementation of pointer in prospect of C++ language?


58. what is the default sizes of String and StringBuffer?


59. what do you mean by realization in oops, what is presistent,transient object.