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C++ Interview Questions
Questions Answers Views Company eMail

What is Copy Constructor?

ABC, Siemens,

5 15774

What is an abstract class?

Siemens,

5 8071

What is the difference between creating an object, using 'new' and using 'malloc'?

HFG, Siemens,

3 9542

What is a virtual base class?

Fidelity, Siemens,

6 20384

What is OOPS and How it is different from Procedural Programming ?

HP, Infosys, Thyrocare,

23 59205

Difference between Top down and bottom up approaches for a given project ?

BSNL, CSC, HCL, HP, IIT, Infosys, Siemens,

14 100595

What and all can a compiler provides by default?

Accenture, HP,

3 12469

What are the different operators in C++?

HP,

3 12017

What is the difference between method and message?

HP,

5 48037

What is difference between initialization and assignment?

HCL, HP, Infosys,

12 53251

when can we use copy constructor?

HP,

6 13719

Describe functional overloading?

HP,

6 9103

Difference between Overloading and Overriding?

Appnetix Techno, GameLoft, HP, IBM, NIIT, Rohde and Schwarz,

35 186864

Difference between Operator overloading and Functional overloading?

HP,

10 47864

What is virtual constructor paradigm?

HCL, HP,

5 11705







Un-Answered Questions { C++ }

How long does it take to get good at leetcode?

269


What is the first name of c++?

262


What are the advantages of using pointers in a program?

294


Why do we use string in c++?

272


Are there any special rules about inlining?

283






What is difference between multiple inheritance and multilevel inheritance?

275


the maximum length of a character constant can be a) 2 b) 1 c) 8

298


Write a program using merge () function to combine the elements of array x[ ] and y[ ] into array z[ ].

283


When not to use object oriented programming?

257


Is string an object in c++?

255


What are shallow and deep copy?

291


Why can't we have instance(stack) of a class as a member of the same class like eg.Class A{A obj;} as we can have self refential pointer

1254


Why is abstraction used?

273


Why do we use iterators?

293


What is the hardest coding language to learn?

263