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Interviews Questions asked by Accenture, TCS, and Wipro

In this blog post, we are going to discuss some of the most frequent interview questions from IT Giants like Accenture, TCS, and Wipro. These companies normally focus on checking the concept and base of students rather than checking exceptional coding skills. So it is quite easy to crack their interview if you have a strong base in computer science. Normally these companies ask simple C Puzzles or conceptual questions in C or C++. They can also ask from JAVA if you have mentioned it on your Resume. Sometimes they also ask about simple Logical puzzles involving out-of-box thinking. They just see your approach to solving problems. I will discuss some of the common questions they ask in interviews.


1) Function and Operator Overloading

This is by far the most common Interview question asked by these companies. You will definitely encounter this question in at least one of your interviews with the above IT companies. So you need to be crystal clear in these concepts
They generally ask the below questions :

a) What is Function Overloading/Operator overloading?
b) What is the need for function overloading?
c) Give some examples of function overloading
d) What are the functions declaration that cannot be overloaded? See Function declarations which cannot be overloaded 
e) Give some examples of Operator Overloading

They normally don't ask big programs in function and operator overloading but make sure that you at least know the simple programs of both. More focus should be on Basic questions

2) Pointers

Next are pointers which are the favorite topics among interviewers generally because students get confused in this part mostly. So you should be very good at the concept of the pointer. Some common questions they will ask you will be :

a) What are Pointers with example?
b) What is the Dangling pointer?
c) What is a Null pointer?
d) What are array pointers?
e) What is a function pointer? See Function Pointers
f) Write a simple program involving pointers

3) Class and Structures

These companies often ask about Classes and Structures. So you need to be clear in these concepts as well. They ask both the concepts classes and structures to make sure that the student knows both C and C++ language and concepts in it well. They will ask you questions like

a) What is Structure/Class?
b) Why do we need a Class in C++
c) Difference between Class and Structures
d) How to find the size of Class and structures? See How to calculate the size of Class
e) What is Inheritance?
f) What is a Virtual Class?
g) What is Abstract Class?
h) What are Constructors and destructors?

The Best place to learn these Basic questions is from the book by Balaguruswamy. It has detailed and easy explanations with examples.

I will post some more Interview Questions asked by these companies in my upcoming posts :-) 
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