Question d’entretien chez HCLTech

HCL: C basics, cpp basics What concepts u have used. Tell each and every thing with example. Diff between array and linked list What is dynamic array and dynamic linked list. When to use for loop and while loop What is null pointer and void pointer why do u use them. Delete an element from double queue. First tell the working of queue and how u will add or delete any item How do u implement circular linked list. How do unknw know tht it is circular linked list. Deletion of an element from circular linked list Diff between static and dynamic memory allocation when to use each.. In which cases private variable will be accessed and tell me the ways. How it is different from protected. Class A>Classb>classC A variable protected is declared in Class A, can it be accessible in class C What is friend function. Tell me few cases where u used oops concepts Wap program to move all zeros at end Wap a program to delete an element in a linked list How do u find a number is it divisible by 2,3,5. Need to know every condition in bitwise Ex: for 2 single digit is set For 3 for 5 how to find using bitwise.