C++

Virtual Functions

You are making a program to manage an animal zoo. You have a base class Animal, and two subclasses: Dog and Cat. In main, you have an array of Animal pointers, where each pointer can hold a Dog or a Cat. The code loops through the array and calls the speak() method of the object, irrespective of its type. Complete the code by adding the speak() method to the Animal class, so that the code works and the corresponding methods get called correctly.

This is an example of polymorphism in action: without knowing the subtype of the objects, you are able to call the speak() method, and the corresponding implementation is getting executed.

#include

using namespace std;

class Animal

{

public:

string name;

//your code goes here

};

class Dog: public Animal

{

public:

void speak() {

cout <<"Woof!"<

}

};

class Cat: public Animal

{

public:

void speak() {

cout <<"Meaw!"<

}

};

int main() {

Cat c1;

c1.name = "Fluffy";

Dog d1;

d1.name = "Bingo";

Animal *a1 = &c1;

Animal *a2 = &d1;

Animal* arr[] = {a1, a2};

for(int i=0;i<2;i++){

arr[i]->speak();

}

}