Exercise 4: Displaying Message Using Virtual Functions

Problem Statement #

You will first build three classes:

• Mammal (parent class)
• Dog (derived class)
• Cat (derived class)

Dog and Cat class will inherit from Mammal.

In the exercise you have to implement the following:

• Mammal class:

  • Has one protected variable for age of the mammal.
  • A constructor that takes the age of mammal as input and sets it.
  • The function Eat() that displays “Mammal eats food”.
  • Function Speak() that displays “Mammal speaks mammalian!!”.
  • Function get_Age() which returns the age of the mammal.

• Dog class:

  • Inherits all the members from Mammal class.
  • Implement all member functions of Mammal class for Dog class.
  • Eat() should display “Dog eats meat”.
  • Speak() should display “Dog barks: ruff! ruff!”.
  • get_Age() should return Dog’s age.

• Cat class:

  • Inherits all the members from Mammal class.
  • Implement all member functions of Mammal class for Cat class.
  • Eat() should display “Cat eats meat”.
  • Speak() should display “Cat meows: Meow! Meow!”.
  • get_Age() should return Cat’s age.

Hint: Think along the direction of virtual functions and their use to implement the same function for different classes separately.

Here’s a sample result which you should get.

Input:

Dog d(5);
Cat c(4);

Expected Output: