____________________ involves using a base-class pointer or reference to invoke virtual functionson base-class and derived-class objects.

If a base class has a non-virtual member function named print, and a pointer variable of that class is pointing to an object of a derived class, then the code ptr->print(); calls

when an application uses pointers or references from the base class to call a virtual function, allowing several implementations of the same functionality to use the same code.

Javascript Question: Part 1 Design a Pet object. A Pet is created with a language argument string and a stomach represented by an array. The Pet  should support functions: eat() and speak(). Use the prototype property to define your object's interface. eat(food) will store the passed argument into its stomach and return what it has eaten thus far. speak(sentence) will simply return the passed in phrase. function Pet(language) {// create stomach// set language}// takes a food_item STRING and returns everything eaten so far ARRAYPet.prototype.eat = function(food_item) {// ... complete }// takes in a sentence STRING and returns the passed in sentence STRING with no changePet.prototype.speak = function(sentence) {// ... complete} You may also use the newer class notation. Part 2 Create an object, Dog, that implements the Pet interface and takes the same argument language. Dogs eat the same way all pets do. Dogs speak differently. Dogs replace each word in a sentence with its only known…

How should a software utilize pointers or references to a base class to make several calls to the same virtual function using various data types and structures?

To effectively utilize a shared virtual function across multiple forms and structures, what is the appropriate method for a program to invoke it when employing base class pointers or references?