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

When is a template better solution than a base class??

emc2,

2 8774

Explain calling an object's member function(declared virtual)from its constructor?

1 3475

What is the concept of object oriented program?

6 7959

You're given an array containing both positive and negative integers and required to find the sub-array with the largest sum (O(N) a la KBL). Write a routine in C for the above.

4 12356

Given an array of size N in which every number is between 1 and N, determine if there are any duplicates in it. You are allowed to destroy the array if you like. [ I ended up giving about 4 or 5 different solutions for this, each supposedly better than the others ].

1 5849

Give a very good method to count the number of ones in a "n" (e.g. 32) bit number.

3 8599

wht is ditch

2234

When you define a integer it gets stored in which data structure?(Stack or a heap)

emc2,

2 6041

What is a scope operator and tell me its functionality?

emc2,

3 6102

What is difference between function overloading and overriding?

emc2,

1 6148

What is difference between new and malloc?

emc2,

7 11624

What is difference between #define and const?

emc2,

3 7788

Write pseudo code for push in a stack?

emc2,

2 10942

What is Hashing and how is it done? Pictorial form?

emc2, Wipro,

2 8815

Polymorphism with an example?

Accenture, emc2,

8 14793

Un-Answered Questions { C++ }

How many standards of c++ are there?

1101

What is null c++?

1142

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

1116

What is c++ & why it is used?

1100

How can a C function be called in a C++ program?

752

What is ifstream c++?

1030

What is virtual destructor ans explain its use?

1130

What is object in c++ wikipedia?

1006

What is a type library?

1111

What is constructor in C++?

1089

How does a C++ structure differ from a C++ class?

1123

Can we inherit constructor in c++?

1094

What does catch(…) mean?

1119

Describe the setting up of my member functions to avoid overriding by the derived class?

1135

What are different types of loops in c++?

1132

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