Siemens Digital Industries Software Software Engineer interview questions

written questions about C/C++, some multiple choice questions: 1. release memory allocated to a linked list 2. OOP concepts 3. how many characters must to allocated to store string "Hallo" 4. "Every square is a special case of a rectangle". how would create a relationship between "class Rectangle" and "class Square"? and Explain? 5. code question: implement SinglyLinkedList::reverse 6.Coding using UML: give all prime numbers in imputed range, calculate the Fibonacci numbers, find the factorial of a given integer using "Factorial of N = N*Factorial of (N-1)" 7. in C++, references can be used to? 8. abstract class in C++ 9.when is a call to an overloaded function resolved?

How did you implement your design using the GraphQL query? How did you describe your data structure.