OOPS Interview Questions
Questions Answers Views Company eMail

What are virtual functions?

2 4447

What is friend function?

Wipro,

12 21185

What is a scope resolution operator?

HP, IBS,

5 15388

What do you mean by inheritance?

IBS,

1748

What is abstraction?

9 10838

What is polymorphism? Explain with an example.

48 121185

What is encapsulation?

TCS,

17 17568

What do you mean by binding of data and functions?

3 8938

What is function overloading and operator overloading?

4 15195

What is virtual class and friend class?

IBS, Intel, Wipro,

5 33749

What do you mean by inline function?

6 12964

What do you mean by public, private, protected and friendly?

CA,

3 9053

When is an object created and what is its lifetime?

IBM,

4 15719

What do you mean by multiple inheritance and multilevel inheritance? Differentiate between them.

2 13743

Difference between realloc() and free?

HP,

9 23502


Post New OOPS Questions

Un-Answered Questions { OOPS }

Why do we use polymorphism?

562


What is coupling in oops?

585


Why is polymorphism important in oop?

621


What is the difference between procedural programming and oops?

544


INSTANCE FIELDS DECLARED private ARE ACCESSIBLE BY THE METHODS ONLY.CAN WE CHANGE THE private FIELD OF AN OBJECT IN A METHOD OF SOME OTHER OBJECT OF THE SAME CLASS?

1625






if i have same function with same number of argument but defined in different files. Now i am adding these two files in a third file and calling this function . which will get called and wht decide the precedence?

2742


What is a superclass in oop?

654


State what is encapsulation and friend function?

687


What is purpose of inheritance?

634


Is data hiding and abstraction same?

561


What does sksksk mean in text slang?

1494


String = "C++ is an object oriented programming language.An imp feature of oops is classes and objects".Write a pgm to count the repeated words from this scenario?

1932


Objective The objective of this problem is to test the understanding of Object-Oriented Programming (OOP) concepts, in particular, on encapsulation. Problem Description Create a program for managing customer’s bank accounts. A bank customer can do the following operations: 1. Create a new bank account with an initial balance. 2. Deposit money into his/her account. 3. Withdraw money from his/her account. For this operation, you need to output “Transaction successful” if the intended amount of money can be withdrawn, otherwise output “Transaction unsuccessful” and no money will be withdrawn from his/her account. Input The input contains several operations and is terminated by “0”. The operations will be “Create name amount”, “Deposit name amount”, or “Withdraw name amount”, where name is the customer’s name and amount is an integer indicating the amount of money. There will be at most 100 bank accounts and they are all created on the first month when the bank is opening. You may assume that all account holders have unique names and the names consist of only a single word. Output The output contains the transaction result of withdrawal operations and the final balance of all customers after some withdrawal and deposit operations (same order as the input). Sample Input Create Billy 2500 Create Charlie 1000 Create John 100 Withdraw Charlie 500 Deposit John 899 Withdraw Charlie 1000 0

1689


What is encapsulation with real life example?

558


What is interface? When and where is it used?

1656