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

Implement strcmp

Bloomberg, Citadel,

3 9675

Implement strncpy

3 10159

how can u create a doubly linked list with out using pointers?

2 5505

Write a program using GUI concept for the scheduling algorithms in Operating system like SJF,FCFS etc..

3855

Base class has two public data members. How can i derive a new class with one datamember as public and another data member as private?.

2 6321

how can i access a direct (absolute, not the offset) memory address? here is what i tried: wrote a program that ask's for an address from the user, creates a FAR pointer to that adress and shows it. then the user can increment/decrement the value in that address by pressing p(inc+) and m(dec-). NOW, i compiled that program and opened it twice (in 2 different windows) and gave twice the same address to it. now look what happen - if i change the value in one "window" of the program, it DOES NOT change in the other! even if they point to the same address in the memory! here is the code snippet: //------------------------------------------------------ #include //INCLUDE EVERY KNOWN HEADER FILE #include //FOR ANY CASE... #include #include #include main() { int far *ptr; //FAR POINTER!!! long address; char key=0; //A KEY FROM THE KEYBOARD int temp=0; clrscr(); cout<<"Enter Address:"; cin>>hex>>address; //GETS THE ADDRESS clrscr(); (long)ptr=address; temp=*ptr; //PUTS THE ADDRESS IN THE PTR cout<<"["< 2428

explain dynamic binding by drowing

Cognizant,

2 7267

how can we design a magic square in c++?or suggest me the basic idea of it.

3 8629

What is the differances between a abstract calss and interface

Aviva, Symphony,

5 11038

why we cant create array of refrences

4 7757

what is difference b/w object based and object oriented programming language?

Chaitanya, College School Exams Tests, Educomp, IBM, Infosys, Telko,

18 47125

I am doing my BS.c MATHS CAN I ABLE TO JOIN IN NIIT?

2 4611

what is multithreading in c++ , what is difference between multithreading and singlethreading.

4 34567

What are the advantanges of modularity

2 14726

How to handle exception in c++, For example in a functions i am assigning memory to some variables and also in next instructions in am dividing one variable also. If this functions generates a error while allocating memory to those variable and also while dividing the variable if i divide by zero then catch block how it will identify that this error has cone from perticular instruction

2146

Un-Answered Questions { C++ }

Differentiate between a copy constructor and an overloaded assignment operator.

1093

What is the difference between a reference and a pointer?

1125

What is the purpose of polymorphism?

1129

What Are The Differences Between A C++ Struct And C++ Class?

2230

Tell me can a pure virtual function have an implementation?

1037

Are php strings immutable?

1062

What header file is needed for exit(); a) stdlib.h b) conio.h c) dos.h

1058

What is this pointer in oop?

1081

If a base class is an adt, and it has three pure virtual functions, how many of these functions must be overridden in its derived classes?

1091

Is c++ a float?

1073

What is std :: endl?

1043

What is the use of register keyword with the variables?

945

What is the difference between mutex and binary semaphore?

1248

What is the significance of classes in oop?

1163

What is a c++ class?

1107

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