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 1275

What is virtual destructors? Why they are used?

1 1321

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

1 1356

What is meant by reference variable in C++?

1 1295

How to create a reference variable in C++

1 1331

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

1 1264

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

743

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

767

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

1 1357

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

4 2324

What are class and object in C++?

1 1448

Compare compile time polymorphism and Runtime polymorphism

1 1228

What do you know about friend class and friend function?

1 1216

Define inline function

1 1299

What is a reference in C++?

1 1397

Un-Answered Questions { C++ }

What is while loops?

1060

which operator is used for performing an exponential operation a) > b) ^ c) none

1066

If there are two catch statements, one for base and one for derived, which should come first?

1035

Write a code/algo to find the frequency of each element in an array?

1124

What is null pointer and void pointer and what is their use?

1102

How do I convert a stl file?

1110

What is the use of "new" operator?

1137

Is arr and &arr are same expression for an array?

1058

What is the meaning of string in c++?

1070

declare an array of structure where the members of the structure are integer variable float variable integer array char variable access all elements of the structure using dot operator and this pointer operator

2358

What is the maximum value of a unsigned char a) 255 b) 256 c) 128

1073

What are the uses of c++ in the real world?

1041

What is a c++ object?

1180

Which is best ide for c++?

1014

what do you mean by volatile variable?

1057

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