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

C++ General Interview Questions

Questions Answers Views Company eMail

Evaulate: 22%5 a) 2 b) 4 c) 0

874

What data structure is fastest, on average, for retrieving data: a) Binary Tree b) Hash Table c) Stack

831

What function initalizes variables in a class: a) Destructor b) Constitutor c) Constructor

915

Is C++ case sensitive a) False b) Depends on implementation c) True

817

What is the equivalent of Pascal's Real a) unsigned int b) float c) char

793

What doescout<<(0==0) print out a) 0 b) 1 c) Compiler error: Lvalue required

795

If all is successful, what should main return a) 0 b) 1 c) void

802

C is to C++ as 1 is to a) What the heck b) 2 c) 10

844

Which sort is best for the set: 1 2 3 5 4 a) Quick Sort b) Bubble Sort c) Merge Sort

869

What does the following code do: int c=0; cout< a) Undefined *Updated* b) 01 c) 00

832

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

855

In int main(int argc, char *argv[]) what is argv[0] a) The first argument passed into the program b) The program name c) You can't define main like that

849

In which header file does one find isalpha() a) conio.h b) stdio.h c) ctype.h

973

Which is not a valid keyword a) public b) protected c) guarded

1007

What is the correct syntax for inheritance a) class aclass : public superclass b) class aclass inherit superclass c) class aclass <-superclass

933

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Un-Answered Questions { C++ General }

What is do..while loops structure?

833

Why is polymorphism useful?

806

When is dynamic checking necessary?

804

What is the purpose of the "delete" operator?

837

What is dev c++ used for?

793

What is the copy-and-swap idiom?

825

What is the difference between structures and unions?

814

What is the use of lambda in c++?

779

What are the benefits of operator overloading?

907

What is a pointer how and when is it used?

810

Do you know what are pure virtual functions?

891

Can create new c++ operators?

771

What is rvalue?

913

Why do we use structure in c++?

786

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

812

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