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 9821

Implement strncpy

3 10292

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

2 5627

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

3902

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 6428

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<<"["< 2484

explain dynamic binding by drowing

Cognizant,

2 7388

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

3 8786

What is the differances between a abstract calss and interface

Aviva, Symphony,

5 11245

why we cant create array of refrences

4 7920

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

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

18 47715

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

2 4727

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

4 34745

What are the advantanges of modularity

2 14845

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

2190

Un-Answered Questions { C++ }

Do inline functions improve performance?

1143

What is class definition in c++ ?

1147

Comment on local and global scope of a variable.

1219

What is the difference between a template and a macro?

1121

When would you choose to return an error code rather than throw an exception?

1082

What is the return value of the insertion operator?

1190

Can comments be nested?

1093

What do you mean by storage classes?

1673

Explain the difference between c++ and java.

1182

Is c++ harder than java?

1136

What is a lambda function c++?

1208

Why polymorphism is used in oops?

1110

Can we change the basic meaning of an operator in c++?

1170

Can we have inheritance without polymorphism?

1086

why reinterpret cast is considered dangerous?

2457

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