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 8758

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

1 3465

What is the concept of object oriented program?

6 7921

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 12349

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 5836

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

3 8585

wht is ditch

2229

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

emc2,

2 6033

What is a scope operator and tell me its functionality?

emc2,

3 6073

What is difference between function overloading and overriding?

emc2,

1 6131

What is difference between new and malloc?

emc2,

7 11573

What is difference between #define and const?

emc2,

3 7764

Write pseudo code for push in a stack?

emc2,

2 10928

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

emc2, Wipro,

2 8792

Polymorphism with an example?

Accenture, emc2,

8 14744

Un-Answered Questions { C++ }

Write is a binary search tree? Write an algo and tell complexity?

1023

What is flush () in c++?

1077

What are the advantages of using const reference arguments in a function?

1074

How do you master coding?

1031

Explain dangling pointer.

1121

What are the two types of comments?

995

Does c++ cost money?

989

What are built-in functions? What is the syntax for the definition?

1076

Will I be able to get a picture in D drive to the c++ program? If so, help me out?

2191

Write a syntax and purpose of switch statement.

1020

Explain container class.

1232

What is a COPY CONSTRUCTOR and when is it called?

996

Explain how overloading takes place in c++?

1039

Is there any function that can skip certain number of characters present in the input stream?

1066

Objective The objective of this problem is to test the understanding of Object-Oriented Programming (OOP) concepts, in particular, on encapsulation. Problem Description Create a program for managing customer’s bank accounts. A bank customer can do the following operations: 1. Create a new bank account with an initial balance. 2. Deposit money into his/her account. 3. Withdraw money from his/her account. For this operation, you need to output “Transaction successful” if the intended amount of money can be withdrawn, otherwise output “Transaction unsuccessful” and no money will be withdrawn from his/her account. Input The input contains several operations and is terminated by “0”. The operations will be “Create name amount”, “Deposit name amount”, or “Withdraw name amount”, where name is the customer’s name and amount is an integer indicating the amount of money. There will be at most 100 bank accounts and they are all created on the first month when the bank is opening. You may assume that all account holders have unique names and the names consist of only a single word. Output The output contains the transaction result of withdrawal operations and the final balance of all customers after some withdrawal and deposit operations (same order as the input). Sample Input Create Billy 2500 Create Charlie 1000 Create John 100 Withdraw Charlie 500 Deposit John 899 Withdraw Charlie 1000 0

2236

For More Un-Answered { C++ } Questions Click Here