Add office photos
Altair Engineering logo
Employer?
Claim Account for FREE

Altair Engineering

4.1
based on 133 Reviews
Video summary
Filter interviews by
Clear (1)

10+ Altair Engineering Sde1 Interview Questions and Answers

Updated 5 Feb 2024

Q1. Given one point and circle how will you find if it's inside circle or outside circle

Ans.

Check if a point is inside or outside a circle

  • Calculate the distance between the center of the circle and the given point using the distance formula

  • If the distance is less than the radius of the circle, the point is inside the circle

  • If the distance is equal to the radius of the circle, the point is on the circle

  • If the distance is greater than the radius of the circle, the point is outside the circle

View 1 answer
right arrow

Q2. how compiler differentiate between different function with same signature. Name mangling

Ans.

Name mangling is used by compilers to differentiate between different functions with the same signature.

  • Name mangling is a process of encoding/decoding function names to include additional information such as parameter types and namespaces.

  • This allows the compiler to differentiate between functions with the same name and signature.

  • For example, in C++, two functions with the same name and signature but in different namespaces will have different mangled names.

  • Name mangling is ...read more

Add your answer
right arrow

Q3. What's Copy Constructor and how and why it is used

Ans.

Copy constructor creates a new object by copying the values of an existing object.

  • Copy constructor is used to create a new object with the same values as an existing object.

  • It is invoked when a new object is initialized with an existing object.

  • It is used to avoid shallow copy and ensure deep copy of objects.

  • Example: MyClass obj1; MyClass obj2 = obj1; //copy constructor called to create obj2

Add your answer
right arrow

Q4. What's smart pointers Which IDE you use Have you used GDB?

Ans.

Smart pointers are objects that manage the memory of dynamically allocated objects, preventing memory leaks and dangling pointers.

  • Smart pointers are a type of RAII (Resource Acquisition Is Initialization) technique.

  • They automatically delete the object they point to when it is no longer needed.

  • Examples of smart pointers include unique_ptr, shared_ptr, and weak_ptr in C++.

  • They are used to prevent memory leaks and dangling pointers.

  • I use Visual Studio Code as my IDE.

  • Yes, I have ...read more

Add your answer
right arrow
Discover Altair Engineering interview dos and don'ts from real experiences

Q5. What's difference between ordered map and unordered map

Ans.

Ordered map maintains the order of insertion while unordered map does not.

  • Ordered map is implemented using a balanced binary search tree while unordered map is implemented using a hash table.

  • Ordered map is useful when we need to maintain the order of insertion while unordered map is useful when we need faster access to elements.

  • Example of ordered map: std::map in C++, Example of unordered map: std::unordered_map in C++

Add your answer
right arrow

Q6. How does virtual function works. What's Vptr and Vtable. Why virtual function is needed

Ans.

Virtual functions allow dynamic binding of functions at runtime. Vptr and Vtable are used to implement this feature.

  • Virtual functions are declared in base class and can be overridden in derived classes.

  • Vptr is a pointer to Vtable which contains addresses of virtual functions.

  • Virtual function is needed to achieve polymorphism and to allow derived classes to have their own implementation of a function.

  • Virtual functions are resolved at runtime based on the object type rather tha...read more

Add your answer
right arrow
Are these interview questions helpful?

Q7. Write C++ program to find absolute difference between sum of diagonal elements

Ans.

C++ program to find absolute difference between sum of diagonal elements

  • Create a 2D array

  • Calculate sum of diagonal elements

  • Calculate absolute difference

  • Print the result

Add your answer
right arrow

Q8. what's' polymorphism and how it works

Ans.

Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were the same type.

  • Polymorphism is achieved through method overriding and method overloading.

  • Method overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.

  • Method overloading is when a class has two or more methods with the same name but different parameters.

  • Polymorphism allows for mor...read more

Add your answer
right arrow
Share interview questions and help millions of jobseekers 🌟
man with laptop

Q9. What's shallow and deep copy

Ans.

Shallow copy creates a new object with the same reference as the original, while deep copy creates a new object with a new reference.

  • Shallow copy only copies the reference to the original object, so changes made to the copy will affect the original object.

  • Deep copy creates a new object with a new reference, so changes made to the copy will not affect the original object.

  • In Python, shallow copy can be made using the copy() method, while deep copy can be made using the deepcopy...read more

View 1 answer
right arrow

Q10. How vector works internally

Ans.

Vectors are dynamic arrays that allocate memory dynamically. They work by storing elements in contiguous memory locations.

  • Vectors allocate memory dynamically and store elements in contiguous memory locations

  • They can be resized dynamically as needed

  • Accessing elements is done using an index, similar to arrays

  • Inserting or deleting elements in the middle of a vector can be expensive as it requires shifting all subsequent elements

  • Vectors have a size and capacity, where size is the...read more

Add your answer
right arrow

Q11. Different containers in STL

Ans.

STL provides various containers like vector, list, map, set, etc.

  • Vector: Dynamic array with contiguous memory allocation

  • List: Doubly linked list

  • Map: Associative container with key-value pairs

  • Set: Associative container with unique keys

  • Deque: Double-ended queue

  • Stack: LIFO data structure

  • Queue: FIFO data structure

Add your answer
right arrow
Contribute & help others!
Write a review
Write a review
Share interview
Share interview
Contribute salary
Contribute salary
Add office photos
Add office photos

Interview Process at Altair Engineering Sde1

based on 1 interviews
Interview experience
3.0
Average
View more
interview tips and stories logo
Interview Tips & Stories
Ace your next interview with expert advice and inspiring stories

Top Sde1 Interview Questions from Similar Companies

Amazon Logo
4.1
 • 38 Interview Questions
RaRa Delivery Logo
3.5
 • 18 Interview Questions
View all
Recently Viewed
INTERVIEWS
Aker Solutions
No Interviews
INTERVIEWS
Altair Engineering
No Interviews
INTERVIEWS
Altair Engineering
No Interviews
INTERVIEWS
Altair Engineering
No Interviews
DESIGNATION
INTERVIEWS
Altair Engineering
No Interviews
INTERVIEWS
Kulwant Nutritions
No Interviews
INTERVIEWS
Aker Solutions
No Interviews
SALARIES
Altair Engineering
INTERVIEWS
Schneider Electric
No Interviews
Share an Interview
Stay ahead in your career. Get AmbitionBox app
play-icon
play-icon
qr-code
Helping over 1 Crore job seekers every month in choosing their right fit company
75 Lakh+

Reviews

5 Lakh+

Interviews

4 Crore+

Salaries

1 Cr+

Users/Month

Contribute to help millions

Made with ❤️ in India. Trademarks belong to their respective owners. All rights reserved © 2024 Info Edge (India) Ltd.

Follow us
  • Youtube
  • Instagram
  • LinkedIn
  • Facebook
  • Twitter