C++ Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

STL (140)
OOPS (873)
C++ General (2409)

C++ Interview Questions

Questions Answers Views Company eMail

Why pure virtual functions are used if they don't have implementation / When does a pure virtual function become useful?

1 1185

What is virtual destructors? Why they are used?

1 1217

What you mean by early binding and late binding? How it is related to dynamic binding?

1 1278

What is meant by reference variable in C++?

1 1208

How to create a reference variable in C++

1 1234

What are the difference between reference variables and pointers in C++?

1 1185

What will the line of code below print out and why?

686

What is the error in the code below and how should it be corrected?

715

What will i and j equal after the code below is executed? Explain your answer.

1 1255

What are the different data types present in C++?

4 2163

What are class and object in C++?

1 1348

Compare compile time polymorphism and Runtime polymorphism

1 1147

What do you know about friend class and friend function?

1 1141

Define inline function

1 1208

What is a reference in C++?

1 1287

Un-Answered Questions { C++ }

Explain deep copy and a shallow copy?

1001

What is abstraction with example?

1054

What is a try block?

1037

Which compiler does turbo c++ use?

1028

What is the difference between while and do while loop?

1096

Write a function to perform the substraction of two numbers. Eg: char N1="123", N2="478", N3=-355(N1-N2).

962

Are c and c++ different?

941

When is dynamic checking necessary?

1056

What is the best c++ book?

1225

List the issue that the auto_ptr object handles?

976

When are exception objects created?

1028

How do you write a function that can reverse a linked-list in C++?

944

What is class in oop with example?

1050

What is the difference between the compiler and the preprocessor?

1054

what is upcasting in C++?

1126

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