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L&T Technology Services C Developer Interview Questions, Process, and Tips

Updated 1 Nov 2022

Top L&T Technology Services C Developer Interview Questions and Answers

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L&T Technology Services C Developer Interview Experiences

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C Developer Interview Questions & Answers

user image Anonymous

posted on 1 Nov 2022

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Technical 

(5 Questions)

  • Q1. 1. Singleton patter: private constructor + Static function
  • Q2. 2. Convert string to integer.
  • Ans. 

    Convert string to integer in C++.

    • Use stoi() function to convert string to integer.

    • Include header file.

    • stoi() function throws an exception if the string is not a valid integer.

    • Use stol() or stoll() for long integers.

    • Use atoi() for C-style strings.

  • Answered by AI
  • Q3. 3. Write a class to debit, credit and balance check functionalities
  • Ans. 

    A class for debit, credit and balance check functionalities

    • Create a class with member variables for balance

    • Add member functions for debit, credit and balance check

    • Ensure proper validation and error handling

    • Consider using exception handling for errors

  • Answered by AI
  • Q4. Explain Abstract design pattern.
  • Ans. 

    Abstract design pattern is a way to define a blueprint for a group of objects with common characteristics.

    • It allows creating objects without specifying their concrete classes.

    • It promotes loose coupling between classes.

    • It is implemented using abstract classes and interfaces.

    • Example: Shape is an abstract class and Circle, Square, Triangle are its concrete subclasses.

    • Example: JDBC API uses abstract classes and interfaces ...

  • Answered by AI
  • Q5. How to add external API to project
  • Ans. 

    To add an external API to a project, you need to first obtain the API documentation and credentials.

    • Obtain API documentation and credentials

    • Integrate API into project using appropriate libraries or frameworks

    • Test API functionality and handle errors appropriately

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be strong in basics of pointers, static functions and virtual functions

Skills evaluated in this interview

C Developer Interview Questions & Answers

user image Anonymous

posted on 4 Apr 2022

I was interviewed in Oct 2021.

Round 1 - Video Call 

(5 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions on Core C concepts, OS mainly.

  • Q1. What is the difference between a structure and a union in C++?
  • Ans. 

    Structures in C++ allow for multiple data types to be grouped together, while unions share the same memory space for all members.

    • Structures in C++ can hold multiple data types, each with its own memory allocation.

    • Unions in C++ share the same memory space for all members, allowing only one member to be active at a time.

    • Structures are used when different types of data need to be stored together, while unions are used whe...

  • Answered by AI
  • Q2. What is dynamic memory allocation in C?
  • Ans. 

    Dynamic memory allocation in C allows for allocating memory at runtime, enabling flexibility in memory usage.

    • Dynamic memory allocation is done using functions like malloc(), calloc(), realloc() in C.

    • It allows for allocating memory as needed during program execution.

    • Dynamic memory allocation helps in managing memory efficiently by allocating and deallocating memory as required.

    • Example: int *ptr = (int*)malloc(5 * sizeof...

  • Answered by AI
  • Q3. What is a zombie process?
  • Ans. 

    A zombie process is a process that has completed execution but still has an entry in the process table.

    • Zombie processes occur when a child process finishes execution before the parent process can collect its exit status.

    • Zombie processes consume system resources and should be cleaned up by the parent process using wait() or waitpid() system calls.

    • Zombie processes can be identified using tools like ps command in Unix/Lin...

  • Answered by AI
  • Q4. Convert a value from Big Endian format to Little Endian format.
  • Ans. 

    To convert a value from Big Endian to Little Endian format, reverse the order of bytes.

    • Iterate through the bytes of the value in reverse order

    • Swap the positions of each byte to convert from Big Endian to Little Endian

    • Example: Big Endian value 0x12345678 becomes Little Endian value 0x78563412

  • Answered by AI
  • Q5. What is IPC?
  • Ans. 

    IPC stands for Inter-Process Communication, which allows processes to communicate and share data with each other.

    • IPC enables processes to exchange data and information with each other.

    • Common IPC mechanisms include pipes, message queues, shared memory, and sockets.

    • Examples of IPC usage include communication between a parent and child process, or between different processes on a network.

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAL&T Technology Services Ltd interview preparation:Topics to prepare for the interview - C, C++, OS, DBMS, Data Structures, Algorithms, Aptitude, OOPSTime required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewRejected

Skills evaluated in this interview

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C Developer Interview Questions & Answers

user image Anonymous

posted on 29 Nov 2021

I applied via Naukri.com and was interviewed in Oct 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Basic C questions, Structures vs Unions, Dynamic memory allocation,convert Big endian to little endian, code to replace repetition value with 0,ISR,Zombie process,IPC, Shared memory, working of system call...

Interview Preparation Tips

Interview preparation tips for other job seekers - If your well with basic, it's enough get to the Next round.

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
2-4 weeks
Result
No response

I was interviewed in Sep 2024.

Round 1 - Aptitude Test 

An aptitude test evaluates an individual's potential to excel in a specific area by assessing their strengths and weaknesses in particular abilities.

Round 2 - Aptitude Test 

An assessment that measures an individual's inherent abilities and potential for success in a specific activity.

Round 3 - Coding Test 

A coding test is a programming assessment designed to evaluate a candidate's coding skills. It is a standard component of the technical hiring process for software developers and programmers.

Round 4 - Coding Test 

Assessment that evaluates a candidate's coding skills

Round 5 - Group Discussion 

Group discussion (GD) topics for interviews may cover areas such as business, social issues, and current affairs. GDs serve to evaluate a candidate's communication, leadership, and teamwork abilities.

Round 6 - Assignment 

Discussion assignments are prompts that your teacher may assign to you. By participating in these discussions, you can reflect on your learning, share ideas and opinions, or ask and answer questions. Discussions may require you to respond to individual questions or provide multiple responses to an ongoing conversation.

Interview Preparation Tips

Interview preparation tips for other job seekers - Job seekers can improve their chances by researching the job market, preparing their resume and cover letter, and networking.
Research
Know your goals: Consider your values, strengths, and ideal work environment.
Research the company: Anticipate common interview questions.
Prepare your resume
Tailor your resume: Customize your resume for each job application.
Highlight your skills: Highlight how your skills and experience match the job description.
Use keywords: Use relevant keywords in your resume and cover letter.
Prepare for interviews
Prepare your answers: Use the STAR method to prepare your answers.
Research the company: Anticipate common interview questions.
Network
Expand your professional network: You may find that more people can recommend you to a new position.
Use your professional network: You can use your network for career advice.
Other tips Don't limit your search to online resources, Optimize your LinkedIn profile, Use several job-search websites, Keep your resume up-to-date, and Develop your interview skills.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. What are the different app states in an iOS application?
Interview experience
4
Good
Difficulty level
Easy
Process Duration
2-4 weeks
Result
No response

I was interviewed in Feb 2025.

Round 1 - Aptitude Test 

The test was easy basic aptitude questions.

Round 2 - Technical 

(2 Questions)

  • Q1. What is linkedlist
  • Q2. Explain your project

Interview Preparation Tips

Interview preparation tips for other job seekers - Very easy process be confident

I applied via Naukri.com and was interviewed in Jul 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. SOLID principals, oops, c# basics, SQL server, azure, design pattern

Interview Preparation Tips

Interview preparation tips for other job seekers - Clear basics of oops and design pattern

Interview Questionnaire 

1 Question

  • Q1. HTML, CSS, BOOTSTRAP, PHP. SQL

I applied via Campus Placement and was interviewed before Jun 2020. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Simple program
  • Q2. I wrote a simple program in C

Interview Preparation Tips

Interview preparation tips for other job seekers - Be bold and confident

I applied via Naukri.com and was interviewed in Jun 2019. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Configuration Management, data modelling, CI relationships, Problem management process flow, SIAM, integration, cmdb reports, KPIs.
  • Q2. General introduction, projects handled in the past,

Interview Preparation Tips

Interview preparation tips for other job seekers - Stick to what u have worked on in your resume, ask about offered profile,
Contribute & help others!
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L&T Technology Services Interview FAQs

How many rounds are there in L&T Technology Services C Developer interview?
L&T Technology Services interview process usually has 2 rounds. The most common rounds in the L&T Technology Services interview process are Resume Shortlist and Technical.
What are the top questions asked in L&T Technology Services C Developer interview?

Some of the top questions asked at the L&T Technology Services C Developer interview -

  1. 3. Write a class to debit, credit and balance check functionalit...read more
  2. How to add external API to proj...read more
  3. Explain Abstract design patte...read more

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