Which of the following best describes polymorphism?
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- Exercise on class inheritance in C++. General requirements: • All data members must be declared as “private” • No global variable is allowed to be declared and used (constants are ok) • Methods within the class and the requested functions cannot have “cin” or “cout” but it should make use of parameters and return value instead unless it is stated explicitly. • “cin” and “cout” should be used in main() or any testing functions • Please make sure that you clearly show how the C++ class, its methods and all the functions are being called and print out its return value and its results properly Please answer the following questions. 1. Define a class named “BooleanVariable” that manages a variable name (string) and a boolean value (true or false). It should not have default constructor. The class must at least provide the following methods: - toString() method that can return a string in the following format: variable-name(variable-boolean-value) such as isSuccessful(true) -…Question Write a C++ program to calculate the gravity of the petrol using multiple inheritance Strictly adhere to the Object-Oriented specifications given in the problem statement. All class names, member variable names, and function names should be the same as specified in the problem statement. Consider a class Liquid with the following protected member variable. DatatypeVariablesfloatdensity Include appropriate getter and setters. Consider a class Fuel with the following protected member variable. DatatypeVariablesfloatrate Include appropriate getters and setters Consider a derived class Petrol derived from Liquid and Fuel and it contains the following member variables. Data TypeVariablefloatgravityintthermalConductivity Include appropriate getters and setters Consider a class PetrolBO with the following method MethodMethod descriptionvoid display(Petrol p)This method is used to display the petrol details. In the main method, inputs are obtained from the user…In C++, create a three-level hierarchy of classes with default constructors, along with destructors, both of which announce themselves to cout. Verify that for an object of the most derived type, all three constructors and destructors are automatically called. Explain the order in which the calls are made.
- Write a C++ program to get Fixed account details from the user and display the details using multilevel inheritance with the following classes. Strictly adhere to the Object-Oriented specifications given in the problem statement. All class names, member variable names, and function names should be the same as specified in the problem statement. Consider a class Account with the following protected member variables. Datatype Variable String accountHolderName String accountNumber double balance Consider a derived class SavingAccount derived from Account class with the following protected member variable. Datatype Variable double minimumBalance Consider a derived class FixedAcocunt derived from SavingAccount class with the following private member variable, Data type Member Name Integer lockingPeriod Include the following member function in FixedAcocunt class Member Function Description void display() This function is used to display the…Object Oriented Programming Answer the following questions to assess your learning for const keyword in classes Q2. Can a non-constant member function of a class access constant data member of same class? Answer: Reason:Check the two of the following affirmations that are TRUE. DA reference can be assigned to a different referent after it had been declared and initialized. DAII member function implementation code should be provided in their class declaration. OThe functions float f(int x); and int f(int &x); have the same signature. OPolymorphic behavior comes when you declare a pointer to an object of a base class type and then make it point to an instance of one of its subclasses type.
- Design and code a class in C++ that represents a single month of the year. It should have a single integer-typed data member to represent the month. Make sure to provide proper construction, access, and mutation for this member as well as input and output methods. In addition, methods for comparing two months chronologically for ordering would be useful as would a method to advance to the next month (note that January follows December and begins the cycle anew) or previous month. In fact, thinking about it, it might be good to be able to advance to a month an arbitrary number of whole months in the future or past: January '+' 5 = June; March '-' 5 = October. Place your Month class in a library. Write a test application (driver) for your class. Oh, and the programmers who commissioned this class wanted to make sure it could handle not only integer-valued representation of a Month but also either whole-word names or three-letter abbreviations for the Months. That means that they should…Language: C++Define a base class shape that includes protected data members for area and volume of a shape, public methods for computing area and volume of a shape, and a display function to display the information about an object. Derive a class point from the shape class. This point class contains two protected data members that hold the position of point. Provide no argument and 2-argument constructors. Override the appropriate functions of base class. Derive a class Circle publicly from the point class. This class has a protected data member ofradius. Provide a no-argument constructor to initialize the fields to some fixed values. Provide a 3-argument constructor to initialize the data members of Circle class to the values sent from outside. Override the methods of base class as required. Derive another class Cylinder from the Circle class. Provide a protected data member for height of cylinder. Provide a no-argument constructor for initializing the data members to default values.…Call the virtual function for an object of each of the derived class. Now call it for the object of the base class. Subject: object oriented programming Language:C++
- Call the virtual function for an object of each of the derived class. Now call it for the object of the base class. Subject:object oriented programming Language:C++Object Oriented Programming Answer the following questions to assess your learning for const keyword in classes Q3. Can a constant object call a non-constant member function of same class? Answer: Reason:Write a C++ program to implement inheritance by accessing the base class constructor in the derived classes.Strictly adhere to the Object-Oriented specifications given in the problem statement. All class names, member variable names, and function names should be the same as specified in the problem statement.The class Event has the following protected attributes Data type Variable string name string detail string type string organiser Define the mentioned protected attributes in the Event class.Define default constructor and a constructor with parameters passed in the same order as declared in the class and include appropriate getters and setters.The derived class Exhibition derived from Event class has the following private attributes Data type Variable int numberOfStalls Define the mentioned private attribute in the Exhibition class.Define default constructor and a constructor with parameters passed in the same order given…