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C++ Interview Questions & Answers

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++ Interview Questions & Answers

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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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)

C++ Basics Interview Questions & Answers (66)

Control Flow in C++ Interview Questions & Answers (3)

Exceptions in C++ Interview Questions & Answers (5)

Functions in C++ Interview Questions & Answers (27)

Inheritance in C++ Interview Questions & Answers (30)

Input and Output Operations in C++ Interview Questions & Answers (12)

Object Oriented Programming in C++ Interview Questions & Answers (42)

Operator Overloading in C++ Interview Questions & Answers (18)

Operators in C++ Interview Questions & Answers (24)

Templates in C++ Interview Questions & Answers (12)

Variables in C++ Interview Questions & Answers (13)

Virtual Functions in C++ Interview Questions & Answers (26)

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What do you mean by Stack unwinding?
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You?re given a simple code for the class BankCustomer. Write the following functions ...

You?re given a simple code for the class BankCustomer. Write the following functions:
* Copy constructor
* = operator overload
* == operator overload
* + operator overload (customers? balances should be added up, as an example of joint account between husband and wife)

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What is class invariant?
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Write a fucntion that will reverse a string.
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What is polymorphism?
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What is a concrete class?
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How do you link a C++ program to C functions?
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What are the conditions that have to be met for a condition to be an invariant of the class?
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What is the difference between declaration and definition?
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How do you write a function that can reverse a linked-list?



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What are the defining traits of an object-oriented language?
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What is difference between template and macro ?
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What is the difference between new/delete and malloc/free?
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What is polymorphism?
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Can I define a type that is an alias of another type (like typedef in C++)?
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Define precondition and post-condition to a member function.
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Which recursive sorting technique always makes recursive calls to sort subarrays that are about half size of the original array?

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Describe Stacks and name a couple of places where stacks are useful.
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What is a conversion constructor?
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STL Containers - What are the types of STL containers?
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