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HCLTech Embedded Software Engineer Interview Questions and Answers
9 Interview questions
Use sorting to find the nth largest number in a jumbled array.
Sort the array in descending order.
Access the nth element in the sorted array to find the nth largest number.
Structure is a collection of variables of different data types while union is a collection of variables of same data type.
Structure allocates memory for all its variables while union allocates memory for only one variable at a time.
Structure is used when we want to store different types of data while union is used when we want to store only one type of data at a time.
Structure is accessed using dot (.) operator wh...
Program to find factorial of a number
Use a loop to multiply the number with all the numbers less than it
Handle the case when the number is 0 or 1 separately
Use recursion to find factorial of a number
Recursion is a process where a function calls itself until a base condition is met.
Recursion involves breaking down a problem into smaller subproblems and solving them recursively
It requires a base case to stop the recursion and prevent infinite looping
Example: Factorial function - n! = n * (n-1)!, where the function calls itself with n-1 until n=1
It is not possible to enter if and else at the same time in a programming language.
If and else are conditional statements that are mutually exclusive.
They are used to execute different blocks of code based on a condition.
To execute multiple blocks of code simultaneously, you can use nested if-else statements or logical operators.
The volatile keyword in C/C++ indicates that a variable may change unexpectedly, preventing compiler optimizations.
Used for variables that can be changed by external factors, like hardware or interrupts.
Prevents the compiler from optimizing code that accesses the variable, ensuring it reads the latest value.
Example: 'volatile int sensorValue;' for a variable updated by an interrupt service routine.
Commonly used in...
Different types of pointers, volatile variable, storage classes, Static and extern keywords, ISR
Pointers: Null pointer, void pointer, function pointer
Volatile variable: Used to indicate that a variable may be changed by external factors
Storage classes: auto, register, static, extern
Static keyword: Used to declare variables that are only accessible within the same file
Extern keyword: Used to declare variables that ...
Storage classes in C define the scope and lifetime of variables.
There are four storage classes in C: auto, register, static, and extern.
Auto variables are stored in the stack and have local scope.
Register variables are stored in CPU registers for faster access.
Static variables retain their value between function calls.
Extern variables are declared in one file and can be accessed in another file.
C programming memory structure involves stack, heap, data, and code segments.
Stack: Used for local variables and function call management.
Heap: Used for dynamic memory allocation.
Data: Contains global and static variables.
Code: Contains the program's executable code.
HCLTech Embedded Software Engineer Interview Experiences
8 interviews found
Anonymous
I applied via Recruitment Consulltant and was interviewed in Oct 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Bare metal code for blinking an LED,
- Ans.
Blinking an LED using bare metal code involves directly manipulating hardware registers without an operating system.
Access the GPIO register for the specific pin connected to the LED
Set the pin as an output
Toggle the pin state at regular intervals to create the blinking effect
- Q2. Different types of pointers, volatile variable, storage classes, Static and extern keywords, ISR,
- Ans.
Different types of pointers, volatile variable, storage classes, Static and extern keywords, ISR
Pointers: Null pointer, void pointer, function pointer
Volatile variable: Used to indicate that a variable may be changed by external factors
Storage classes: auto, register, static, extern
Static keyword: Used to declare variables that are only accessible within the same file
Extern keyword: Used to declare variables that are d...
(2 Questions)
- Q1. Find nth largest number in a jumbled array
- Ans.
Use sorting to find the nth largest number in a jumbled array.
Sort the array in descending order.
Access the nth element in the sorted array to find the nth largest number.
- Q2. Deeper questions on static, compilation
Skills evaluated in this interview
(2 Questions)
- Q1. Bitwise operators
- Q2. RTOS conecpts questions
(1 Question)
- Q1. Why you choose HCl
- Ans.
I chose HCl for its versatility and effectiveness in various applications.
HCl is commonly used in industries such as pharmaceuticals, food processing, and chemical manufacturing.
It is a strong acid that can be used for pH control, cleaning, and as a catalyst in chemical reactions.
HCl is also used in the production of PVC, fertilizers, and dyes.
Its ability to dissolve metals makes it useful in metal cleaning and etching...
Interview Preparation Tips
Chandana K S
(2 Questions)
- Q1. C programming memory structure
- Ans.
C programming memory structure involves stack, heap, data, and code segments.
Stack: Used for local variables and function call management.
Heap: Used for dynamic memory allocation.
Data: Contains global and static variables.
Code: Contains the program's executable code.
- Q2. Storage class in c
- Ans.
Storage classes in C define the scope and lifetime of variables.
There are four storage classes in C: auto, register, static, and extern.
Auto variables are stored in the stack and have local scope.
Register variables are stored in CPU registers for faster access.
Static variables retain their value between function calls.
Extern variables are declared in one file and can be accessed in another file.
Skills evaluated in this interview
Selected
I applied via Recruitment Consulltant and was interviewed before Nov 2022. There were 2 interview rounds.
(2 Questions)
- Q1. Basic c programming question
- Q2. Logic question and bit manipulation
I applied via Recruitment Consultant and was interviewed in Aug 2021. There were 3 interview rounds.
Interview Questionnaire
5 Questions
- Q1. 1,. volatile keyword
- Ans.
The volatile keyword in C/C++ indicates that a variable may change unexpectedly, preventing compiler optimizations.
Used for variables that can be changed by external factors, like hardware or interrupts.
Prevents the compiler from optimizing code that accesses the variable, ensuring it reads the latest value.
Example: 'volatile int sensorValue;' for a variable updated by an interrupt service routine.
Commonly used in embe...
- Q2. 2. Difference between structure and union
- Ans.
Structure is a collection of variables of different data types while union is a collection of variables of same data type.
Structure allocates memory for all its variables while union allocates memory for only one variable at a time.
Structure is used when we want to store different types of data while union is used when we want to store only one type of data at a time.
Structure is accessed using dot (.) operator while u...
- Q3. 3. How to enter if and else at the same time
- Ans.
It is not possible to enter if and else at the same time in a programming language.
If and else are conditional statements that are mutually exclusive.
They are used to execute different blocks of code based on a condition.
To execute multiple blocks of code simultaneously, you can use nested if-else statements or logical operators.
- Q4. Program to find factorial of a number
- Ans.
Program to find factorial of a number
Use a loop to multiply the number with all the numbers less than it
Handle the case when the number is 0 or 1 separately
Use recursion to find factorial of a number
- Q5. Explain recursion with an example
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Feb 2021. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. They asked about all protocols,vector tools,project and analysis and some of traceability tools
Interview Preparation Tips
And it’s really giving a good time to give an interview
Then totally depends on us about how confident we are giving a interview
I applied via Naukri.com and was interviewed in Dec 2019. There were 5 interview rounds.
Interview Questionnaire
5 Questions
- Q1. I was selected for the Largest Aircraft manufacturing company in world, hence the interview process was harder then expected. My advice is to be very confident with what knowledge you have and represent yo...
- Q2. Be very firm with C Programming, be 100% prepared with one of the language.
- Q3. I2C and SPI are the key Communication protocols which you should look out for.
- Q4. Interview without question on Hardware for Embedded Engineer is incomplete, give a matured answer (which comes by experience) which makes interviewer get more confident on you. Be prepared with minimum 3 m...
- Q5. Go with good knowledge on Sensors, interfacing sensors, interrupts, polling and ADC
What people are saying about HCLTech
Interview questions from similar companies
Sayan Dey
I applied via Naukri.com and was interviewed in Nov 2019. There were 3 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Why are you looking for the job change?
- Ans.
I'm seeking new challenges and opportunities for growth that align with my career goals and aspirations.
Desire for professional growth: I'm looking to expand my skill set and take on more leadership responsibilities.
Seeking a better cultural fit: My current company has a different work culture than what I thrive in; I value collaboration and innovation.
Interest in new technologies: I'm excited about working with cuttin...
- Q2. Relevant technical questions, as per my current technology
Interview Preparation Tips
I applied via Recruitment Consulltant and was interviewed before Apr 2021. There were 3 interview rounds.
Standard Aptitude questions
Based on strings and array
(1 Question)
- Q1. Background questions and technical questions related to problem solved
Interview Preparation Tips
It's more on your self development and your carrier.
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