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 1216

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 1233

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

1 1184

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 1254

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++ }

What is basic concept of oop?

1107

What is the use of typedef?

1051

Is there a difference between class and struct?

961

What are destructors?

951

What does the nocreate and noreplace flag ensure when they are used for opening a file?

1065

What is the difference between a baller and a reference in C++?

1064

What are benefits of oop?

1085

What is the two main roles of operating system?

983

Write a program to implement OOPS concepts such as inheritance, polymorphism, friend function, operator overloading?

4685

What does no cap mean?

1013

How can you create a virtual copy constructor?

1042

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

962

Is c++ pass by reference or value?

1009

What is the fundamental idea of oop?

1090

If a round rectangle has straight edges and rounded corners, your roundrect class inherits both from rectangle and from circle, and they in turn both inherit from shape, how many shapes are created when you create a roundrect?

1079

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