Ce cuvant cheie trebuie utilizat pentru a crea o metoda virtuala intr-o clasa ? What keyword should be used to create a virtual method within a class ?Un punctoverwriteoverridevirtual=0abstract

Cu ce cuvant cheie ne putem asigura ca o functie virtuala nu mai poate fi suprascrisa in clasele derivate ? /  With what keyword can we ensure that a virtual function cannot be overridden in derived classes?Un punctlastfinal~overwritable!overwritable!overrideunionnon overwritable

Dinesh is working in a supermarket and he is developing a program to calculate the cost of different types of items. Help him write the program that does the following:a) Create a base class, ItemType, with one virtual function double calculateAmount()b) Create a class called wooden that extends ItemType class with a number of items and cost as its private attributes. Obtain the data members and override the virtual function and calculate the total amount.c) Create a class called electronics that extends ItemType class with cost as its private attribute. Obtain the data member and override the virtual function and calculate the amount with 20% discount.Note: This question helps in clearing Infosys tests.Input format :The first line consists of an integer choice (1 or 2) representing the choice of item type.If the choice is 1 (wooden items), the next line consists of two space-separated integers: noOfItems and cost, representing the number of wooden items and their individual cost, respectively.If the choice is 2 (electronics), the next line consists of a single floating-point number cost, representing the cost of the electronic item.Output format :The output prints a floating-point number representing the calculated total cost of the chosen item type rounded off to two decimal places.Code constraints :10 < cost < 1060 < noOfItems < 20Sample test cases :Input 1 :15 840.5Output 1 :4202.50Input 2 :21800.56Output 2 :1440.45Note :

Select the correct answerWhich of the following is used to make an Abstract class?OptionsMaking atleast one member function as pure virtual functionDeclaring as Abstract class using virtual keywordDeclaring as Abstract class using static keywordMaking atleast one member function as virtual function

What is the purpose of the virtual keyword in C++?To define a function that can be overridden in a derived class.To define a function that cannot be overridden.To declare a function outside of a class.To create a template function.

Which of the following is an example of a class with a pure virtual function in C++?