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HCLTech Software Developer Interview Questions and Answers
83 Interview questions
A function in C is a block of code that performs a specific task and can be reused throughout a program.
Functions help in code modularity and reusability.
Syntax: returnType functionName(parameters) { /* code */ }
Example: int add(int a, int b) { return a + b; }
Functions can return values or be void (no return).
Example of void function: void printHello() { printf('Hello'); }
Both 'const char* p' and 'char const* p' are equivalent, indicating a pointer to a constant character string.
const char* p: Pointer to a constant character. The character data cannot be modified through this pointer.
char const* p: Same as above; the const qualifier applies to the character data, not the pointer itself.
Example: const char* str1 = 'Hello'; char const* str2 = 'World'; Both point to string literals th...
malloc allocates memory without initialization; calloc allocates and initializes memory to zero.
malloc(size_t size): Allocates 'size' bytes of memory. Example: int *arr = (int *)malloc(10 * sizeof(int));
calloc(size_t num, size_t size): Allocates memory for an array of 'num' elements, each 'size' bytes, initialized to zero. Example: int *arr = (int *)calloc(10, sizeof(int));
malloc does not initialize memory, leadin...
A dangling pointer is a pointer that does not point to a valid object or memory location, often due to deallocation.
Occurs when an object is deleted or goes out of scope, but the pointer still references it.
Example: If you delete an object and still try to access it through a pointer, it becomes dangling.
Can lead to undefined behavior, crashes, or data corruption if dereferenced.
Common in languages like C and C++ ...
What people are saying about HCLTech
C has several data types, including basic types, derived types, and user-defined types, each serving different purposes.
1. Basic Data Types: Include int, char, float, and double. Example: int age = 30;
2. Derived Data Types: Arrays, pointers, structures, and unions. Example: int arr[5];
3. User-Defined Data Types: Enums and typedefs. Example: enum Color {RED, GREEN, BLUE};
4. Size and Range: Each data type has a spec...
Synchronous tasks block execution until completion, while asynchronous tasks allow other operations to proceed during execution.
Synchronous tasks execute in sequence; the next task waits for the current one to finish.
Example: A function that reads a file and returns its content before proceeding.
Asynchronous tasks can run independently; they notify when complete, allowing other tasks to run concurrently.
Example: A...
OOP (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and methods.
Encapsulation: Bundling data and methods that operate on the data within one unit (class). Example: A 'Car' class with properties like 'color' and methods like 'drive()'.
Inheritance: Mechanism to create a new class using properties and methods of an existing class. Example: 'ElectricCar' ...
Decorators are design patterns in Python that allow modification of functions or methods at definition time.
Function Wrapping: Decorators wrap a function, allowing you to add functionality before or after the original function runs.
Syntax: Decorators are applied using the '@decorator_name' syntax above the function definition.
Example: @app.route('/') defines a route in Flask, modifying the function to handle web r...
ACID properties ensure reliable processing of database transactions, maintaining data integrity and consistency.
Atomicity: Transactions are all-or-nothing; if one part fails, the entire transaction fails. For example, transferring money from one account to another must either complete fully or not at all.
Consistency: Transactions must bring the database from one valid state to another, ensuring all rules and const...
SQL joins combine rows from two or more tables based on related columns.
INNER JOIN: Returns records with matching values in both tables. Example: SELECT * FROM A INNER JOIN B ON A.id = B.id;
LEFT JOIN: Returns all records from the left table and matched records from the right table. Example: SELECT * FROM A LEFT JOIN B ON A.id = B.id;
RIGHT JOIN: Returns all records from the right table and matched records from the ...
HCLTech Software Developer Interview Experiences
88 interviews found
Anonymous
Selected
I appeared for an interview in May 2025, where I was asked the following questions.
- Q1. What is the difference between malloc and calloc?
- Ans.
malloc allocates memory without initialization; calloc allocates and initializes memory to zero.
malloc(size_t size): Allocates 'size' bytes of memory. Example: int *arr = (int *)malloc(10 * sizeof(int));
calloc(size_t num, size_t size): Allocates memory for an array of 'num' elements, each 'size' bytes, initialized to zero. Example: int *arr = (int *)calloc(10, sizeof(int));
malloc does not initialize memory, leading to ...
- Q2. What is the difference between const char* p and char const* p?
- Ans.
Both 'const char* p' and 'char const* p' are equivalent, indicating a pointer to a constant character string.
const char* p: Pointer to a constant character. The character data cannot be modified through this pointer.
char const* p: Same as above; the const qualifier applies to the character data, not the pointer itself.
Example: const char* str1 = 'Hello'; char const* str2 = 'World'; Both point to string literals that ca...
- Q3. What is a function in c?
- Ans.
A function in C is a block of code that performs a specific task and can be reused throughout a program.
Functions help in code modularity and reusability.
Syntax: returnType functionName(parameters) { /* code */ }
Example: int add(int a, int b) { return a + b; }
Functions can return values or be void (no return).
Example of void function: void printHello() { printf('Hello'); }
- Q4. Explain different data types in C
- Ans.
C has several data types, including basic types, derived types, and user-defined types, each serving different purposes.
1. Basic Data Types: Include int, char, float, and double. Example: int age = 30;
2. Derived Data Types: Arrays, pointers, structures, and unions. Example: int arr[5];
3. User-Defined Data Types: Enums and typedefs. Example: enum Color {RED, GREEN, BLUE};
4. Size and Range: Each data type has a specific ...
- Q5. What is a dangling pointer?
- Ans.
A dangling pointer is a pointer that does not point to a valid object or memory location, often due to deallocation.
Occurs when an object is deleted or goes out of scope, but the pointer still references it.
Example: If you delete an object and still try to access it through a pointer, it becomes dangling.
Can lead to undefined behavior, crashes, or data corruption if dereferenced.
Common in languages like C and C++ where...
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Nov 2024. There were 4 interview rounds.
First round was Aptitude which was quite easy
(2 Questions)
- Q1. Resume bases Question
- Q2. Question on OOPS
(1 Question)
- Q1. Resume and scenario based question
(2 Questions)
- Q1. Introduce yourself
- Ans.
I am a software developer with 5 years of experience in Java and Python.
Experienced in Java and Python programming languages
Worked on developing web applications using Spring framework
Familiar with Agile development methodologies
- Q2. What challenges do you faced during your project and how you approached them
- Ans.
I faced challenges with integrating third-party APIs and resolved them by thoroughly researching documentation and seeking help from colleagues.
Integrating third-party APIs required understanding complex documentation
Encountered issues with data formatting and authentication
Collaborated with team members to troubleshoot and find solutions
nihar senapati
(2 Questions)
- Q1. Ask abour prevous company and current company
- Q2. And your expected salary and current salary.
- Ans.
I am currently earning $80,000 and expecting a salary of $90,000.
Current salary: $80,000
Expected salary: $90,000
(1 Question)
- Q1. Technical 2 reounds after that a.final hr eound
(1 Question)
- Q1. Negotiation on salary
I applied via LinkedIn and was interviewed in Nov 2024. There was 1 interview round.
(2 Questions)
- Q1. Spring related question
- Q2. Opps questions and java basics
Selected
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
(2 Questions)
- Q1. OOPS concepts in java
- Ans.
OOPS concepts in Java refer to Object-Oriented Programming principles like Inheritance, Encapsulation, Polymorphism, and Abstraction.
Inheritance: Allows a class to inherit properties and behavior from another class.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Polymorphism: Ability to present the same interface for different data types.
Abstraction: Hiding the implementation detail...
- Q2. Code to use MultivaluedMap and add list of values to a particular key
- Ans.
Using MultivaluedMap to add a list of values to a particular key in Java
Create a MultivaluedMap object from Apache Commons Collections library
Use the put method to add a key-value pair where the value is a list of values
Use the get method to retrieve the list of values for a particular key
Skills evaluated in this interview
I applied via Recruitment Consulltant and was interviewed in Dec 2024. There was 1 interview round.
(2 Questions)
- Q1. Diff b/w set and orderedset
- Ans.
Set is an unordered collection of unique elements, while ordered set is a collection of unique elements with a defined order.
Set does not maintain any specific order of elements, while ordered set maintains the order of elements based on insertion.
In a set, elements are stored in a random order, while in an ordered set, elements are stored in the order they were inserted.
Examples of sets include {1, 2, 3} while example...
- Q2. 4 priniples of OOPS
- Ans.
4 principles of OOPS are Inheritance, Encapsulation, Abstraction, and Polymorphism.
Inheritance allows a class to inherit properties and behavior from another class.
Encapsulation restricts access to certain components within a class.
Abstraction hides complex implementation details and only shows necessary features.
Polymorphism allows objects to be treated as instances of their parent class.
I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.
(3 Questions)
- Q1. Basic oops concepts
- Q2. SQL server questions
- Q3. Based on our old projects questions was asked
Girivardhan Reddy Gandra
Selected
I appeared for an interview in May 2025, where I was asked the following questions.
- Q1. Who is the CEO of HCL Technologies?
- Ans.
HCL Technologies is led by CEO C. Vijayakumar, who has been instrumental in the company's growth and innovation.
C. Vijayakumar has been with HCL for over 25 years, contributing to its strategic direction.
Under his leadership, HCL has expanded its global presence and service offerings.
He emphasizes innovation and digital transformation in the tech industry.
C. Vijayakumar has a background in engineering and management, e...
- Q2. What experience do you have?
- Ans.
I have extensive experience in software development, focusing on web applications and agile methodologies.
Developed a full-stack web application using React and Node.js for a local business, improving their online presence.
Collaborated in an Agile team to deliver software updates bi-weekly, enhancing project efficiency.
Implemented RESTful APIs for data exchange between front-end and back-end systems, ensuring seamless ...
- Q3. What salary are you expecting?
- Ans.
I expect a competitive salary based on my skills, experience, and industry standards, ideally in the range of $X to $Y.
Research industry standards: For example, Glassdoor or Payscale can provide insights into average salaries for similar roles.
Consider my experience: With X years in the field, I bring valuable skills that justify a higher salary.
Location matters: Salaries can vary significantly based on the cost of liv...
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. What are the responsibilities of a software developer?
- Ans.
Software developers design, build, and maintain software applications, ensuring functionality and user satisfaction.
Designing software architecture: Creating blueprints for applications, like designing a house before construction.
Writing code: Implementing features using programming languages such as Python, Java, or JavaScript.
Testing and debugging: Identifying and fixing bugs to ensure software runs smoothly, similar...
- Q2. What motivates your company?
- Ans.
Our company is driven by innovation, customer satisfaction, and a commitment to excellence in software development.
Innovation: We constantly seek new technologies and methodologies to improve our products, like adopting AI for better user experiences.
Customer Satisfaction: We prioritize user feedback to enhance our software, ensuring it meets the evolving needs of our clients.
Team Collaboration: We foster a collaborati...
- Q3. What project are you currently working on?
- Q4. Which projects will we be working on from the HCLTech side?
- Q5. What programming languages do you utilize in your projects?
- Ans.
I utilize various programming languages tailored to project requirements, including Python, JavaScript, and Java.
Python: Used for data analysis and machine learning projects, leveraging libraries like Pandas and TensorFlow.
JavaScript: Essential for web development, particularly with frameworks like React and Node.js for front-end and back-end.
Java: Commonly used in enterprise applications and Android development, known...
- Q6. What aspects of software development interest you?
- Ans.
I'm passionate about problem-solving, user experience, and continuous learning in software development.
Problem-solving: I enjoy tackling complex challenges, like optimizing algorithms for better performance.
User experience: Creating intuitive interfaces that enhance user satisfaction is a key interest, as seen in my work on a mobile app redesign.
Continuous learning: I love keeping up with new technologies, such as expl...
I applied via Recruitment Consulltant and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. Uses of sy-ucomm variable
- Ans.
sy-ucomm variable is used in ABAP programming to capture user input from function keys on the screen.
Used to capture user input from function keys on the screen
Commonly used in SAP ABAP programming
Can be used to trigger specific actions based on user input
- Q2. Rfc connections t code
Interview Preparation Tips
HCLTech Interview FAQs
Some of the top questions asked at the HCLTech Software Developer interview -
The duration of HCLTech Software Developer interview process can vary, but typically it takes about less than 2 weeks to complete.
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HCLTech Software Developer Reviews and Ratings
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