Chropynska Interview Questions and Answers

Questions related to data structures, memory management, programming languages, and computer architecture.

• Linked list is a dynamic data structure while array is a static data structure.

• Union is a data type that allows storing different data types in the same memory location as opposed to array which stores elements of the same data type.

• Prime numbers are numbers that are only divisible by 1 and themselves.

• Memory segment refers to a portion of the computer's memory that is all...read more

Virtual function is a function in C++ that can be overridden in a derived class.

• Virtual functions are declared in a base class and defined in a derived class.

• They allow polymorphism, where a derived class object can be treated as a base class object.

• The virtual keyword is used to declare a function as virtual.

• Example: virtual void display() = 0; // pure virtual function

• Example: virtual void display() { cout << 'Base class display' << endl; }

• Example: void display() override { ...read more

A constructor is a special method that is used to initialize objects of a class.

• Constructors have the same name as the class they belong to.

• They are called automatically when an object of the class is created.

• They can be used to set default values for object properties.

• Constructors can be overloaded to accept different parameters.

• Example: public class Car { public Car() { // constructor code here } }

Friend class is a class that has access to the private and protected members of another class.

• Friend class is declared using the 'friend' keyword.

• It allows the friend class to access the private and protected members of the class it is friends with.

• Friendship is not mutual, meaning the friend class does not grant access to its own private and protected members.

• Friend functions can also be declared to have access to private and protected members of a class.

• Example: class A dec...read more

A destructor is a member function of a class that is responsible for destroying objects of that class.

• Destructors have the same name as the class preceded by a tilde (~).

• They are called automatically when an object is destroyed or goes out of scope.

• They are used to release resources allocated by the object during its lifetime.

• Example: ~MyClass() { delete[] myArray; }

• Destructors cannot be overloaded or inherited.