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C++ Interview Questions

Below we have listed all the C++ Interview Questions and answers. Feel free to comment on any C++ Interview Questions or answer by the comment feature available on the page.

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C++ is an object oriented programming (OOP) language, developed by Bjarne Stroustrup, and is an extension of C language. It is therefore possible to code C++ in a "C style" or "object-oriented style." It has imperative, object-oriented and generic programming features, while also providing facilities for low-level memory manipulation. It was designed with a bias toward system programming and embedded, resource-constrained and large systems, with performance, efficiency and flexibility of use as its design highlights.

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Subcategories for C++ Interview Questions & Answers :-

Following are sub categories for which Interview Questions & Answers are available under C++ Interview Questions & Answers. Please select the appropriate sub-category:-

Arrays, Strings, Pointers and References in C++ Interview Questions & Answers (48) Exam Mode | Learning Mode

C++ Basics Interview Questions & Answers (66) Exam Mode | Learning Mode

Control Flow in C++ Interview Questions & Answers (3) Exam Mode | Learning Mode

Exceptions in C++ Interview Questions & Answers (5) Exam Mode | Learning Mode

Functions in C++ Interview Questions & Answers (27) Exam Mode | Learning Mode

Inheritance in C++ Interview Questions & Answers (30) Exam Mode | Learning Mode

Input and Output Operations in C++ Interview Questions & Answers (12) Exam Mode | Learning Mode

Object Oriented Programming in C++ Interview Questions & Answers (42) Exam Mode | Learning Mode

Operator Overloading in C++ Interview Questions & Answers (18) Exam Mode | Learning Mode

Operators in C++ Interview Questions & Answers (24) Exam Mode | Learning Mode

Templates in C++ Interview Questions & Answers (12) Exam Mode | Learning Mode

Variables in C++ Interview Questions & Answers (13) Exam Mode | Learning Mode

Virtual Functions in C++ Interview Questions & Answers (26) Exam Mode | Learning Mode

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Question
Rating
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What?s the output of the following program? Why?
#include <stdio.h>
main()
{
typedef union
{
int a;
char b[10];
float c;
}
Union;

Union x,y = {100};
x.a = 50;
strcpy(x.b,"hello");
x.c = 21.50;

printf("Union x : %d %s %f ",x.a,x.b,x.c );
printf("Union y :%d %s%f ",y.a,y.b,y.c);
}

Given inputs X, Y, Z and operations | and & (meaning bitwise OR and AND, respectively)
What is output equal to in
3.6 Rating
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When do use "const" reference arguments in function?
3.2 Rating
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Differences of C and C++
3.1 Rating
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What are 2 ways of exporting a function from a DLL?
3.3 Rating
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What are proxy objects?


4.1 Rating
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What is an orthogonal base class?
4.0 Rating
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What does extern mean in a function declaration?
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What is the use of ?using? declaration. ?
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What can I safely assume about the initial values of variables which are not explicitly initialized?
2.8 Rating
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Differentiate persistent & non-persistent objects?
3.0 Rating
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What do u meant by "SBI" of an object?

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When can you tell that a memory leak will occur?
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Write the psuedo code for the Depth first Search.

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How do you find out if a linked-list has an end? (i.e. the list is not a cycle)
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How does throwing and catching exceptions differ from using setjmp and longjmp?
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What is the difference between char a[] = ?string?; and char *p = ?string?;?
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What is the word you will use when defining a function in base class to allow this function to be a polimorphic function?
virtual
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Define a constructor - What it is and how it might be called (2 methods).
4.8 Rating
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Why do C++ compilers need name mangling?
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What issue do auto_ptr objects address?
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India News Network
Latest 20 Questions
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
_________ amounts to rejection of the original offer. (a) Cross offer (b) Special offer (c) Standing offer (d) Counter offer
A advertises to sell his old car by advertising in a newspaper. This offer is caleed: (a) General Offer (b) Special Offer (c) Continuing Offer (d) None of the above
In case a counter offer is made, the original offer stands: (a) Rejected (b) Accepted automatically (c) Accepted subject to certain modifications and variations (d) None of the above
In case of unenforceable contract having some technical defect, parties (a) Can sue upon it (b) Cannot sue upon it (c) Should consider it to be illegal (d) None of the above
If entire specified goods is perished before entering into contract of sale, the contract is (a) Valid (b) Void (c) Voidable (d) Cancelled
______________ contracts are also caled contracts with executed consideration. (a) Unilateral (b) Completed (c) Bilateral (d) Executory
A offers B to supply books @ Rs 100 each but B accepts the same with condition of 10% discount. This is a case of (a) Counter Offer (b) Cross Offer (c) Specific Offer (d) General Offer
_____________ is a game of chance. (a) Conditional Contract (b) Contingent Contract (c) Wagering Contract (d) Quasi Contract
There is no binding contract in case of _______ as one's offer cannot be constructed as acceptance (a) Cross Offer (b) Standing Offer (c) Counter Offer (d) Special Offer
An offer is made with an intention to have negotiation from other party. This type of offer is: (a) Invitation to offer (b) Valid offer (c) Voidable (d) None of the above
When an offer is made to the world at large, it is ____________ offer. (a) Counter (b) Special (c) General (d) None of the above
Implied contract even if not in writing or express words is perfectly _______________ if all the conditions are satisfied:- (a) Void (b) Voidable (c) Valid (d) Illegal
A specific offer can be accepted by ___________. (a) Any person (b) Any friend to offeror (c) The person to whom it is made (d) Any friend of offeree
An agreement toput a fire on a person's car is a ______: (a) Legal (b) Voidable (c) Valid (d) Illegal
"Holiday Packages" announced as an advertisement are an example of _________: (a) Offer (b) Counter Offer (c) Invitation to Offer (d) None of the above
A match fixing contract between a player and a broker is a: (a) Valid Contract (b) Unenforceable Contract (c) Void Contract (d) Illegal Contract
When a bookseller sells a book on cash payment then it is called as ___________: (a) Unilateral Contract (b) Bilateral Contract (c) Executed Contract (d) Executory Contract
____________ agreements are created by situation: (a) Written (b) Oral (c) Void (d) Implied
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