Page 83 - Modular_V2.0_C++_Flikpbook
P. 83
Example: The + (plus) operator performs addition when used with integers and concatenation
when used with strings.
3. Function Overriding: The process of redefining a function with the same name, return type,
and argument list in both the subclass and the superclass.
Let's create a program to understand the concept better.
Program 5: Demonstrating function overriding.
#include<iostream.h>
#include<conio.h>
class Animal
{
public:
void makeSound()
DOSBox 0.74, Cpu speed: max 100%
{
Dog Sound: D_
cout<< "Animal Sound: A";
}
};
class Dog : public Animal
{
public:
void makeSound() // Overriding the base class function
{
cout<< "Dog Sound: D";
}
};
void main()
{
clrscr();
Dog d;
d.makeSound(); // Calls the overridden function in Dog class
getch();
}
This program demonstrates function overriding, where the Dog class redefines the makeSound()
function of the Animal class. The base class prints a generic sound, while the derived class
provides a specific barking sound. When a Dog object calls makeSound(), the overridden
function runs, showcasing runtime polymorphism.
81
OOP Concepts

