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C++ Interview Questions
Questions Answers Views Company eMail

What do you mean by multiple inheritance and multilevel inheritance? Differentiate between them.

2 15019

Difference between realloc() and free?

HP,

9 26778

What is a template?

7 10094

What are the main differences between procedure oriented languages and object oriented languages?

IBM, Infosys, Wipro,

9 22473

What is R T T I ?

Ness Technologies,

6 16765

What are generic functions and generic classes?

5 23193

What is namespace?

15 32543

What is the difference between pass by reference and pass by value?

Pfizer, TCS,

12 42193

Why do we use virtual functions?

4 15874

What do you mean by pure virtual functions?

8 16465

What are virtual classes?

2248

Does c++ support multilevel and multiple inheritance?

IBS, Wipro,

9 18230

What are the advantages of inheritance?

IBS, TCS,

26 99402

When is a memory allocated to a class?

11 30795

What is the difference between declaration and definition?

IBS,

20 52145


Un-Answered Questions { C++ }

A prime number is a number which is divisible only by itself and 1. Examples of the first few primes are 2, 3, 5, 7, 11. Consider writing a program which can generate prime numbers for you. Your program should read in and set a maximum prime to generate and a minimum number to start with when looking for primes. This program should be able to perform the following tasks: 1. Read the maximum number from user (keyboard input) to look for primes. The program should not return any primes greater than this number. 2. Read the minimum number from user (keyboard input) to look for primes. The program should not return any primes less than this number. 3. Generate and print out every prime number between the maximum prime and minimum number specified by the user.

2251


What is the array and initializing arrays in c++?

1085


Differentiate between a constructor and a method in C++.

1121


How are pointers type-cast?

1172


What is the best c++ compiler?

1229


Can we use pointers in c++?

1123


Difference between pointer to constant and constant pointer to a constant. Give example.

1177


When should overload new operator on a global basis or a class basis?

1139


What is the role of static keyword for a class member variable?

1121


In which header file does one find isalpha() a) conio.h b) stdio.h c) ctype.h

1268


Write a program that ask for user input from 5 to 9 then calculate the average

1164


Differentiate between C and C++.

1328


Explain the difference between new() and malloc() in c++?

1179


Differentiate between realloc() and free().

1105


What are the 3 principles of oop?

1178