Page 305 - Computer_Science_F5

Computer Science In the code above, the parent class is called Animal and it has two methods: eat()
and sleep().

The child class, Dog, is created based on the Animal class. It inherits the methods
from Animal and adds a new method called bark(). In the main() function, an object
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of type Dog is created. This object can access and call methods from both the parent
class (Animal) and the child class (Dog).

Activity 4.10:

Developing program to deposit and withdraw money
Assume you have been hired by a bank to develop a program for customers to
deposit and withdraw money. The program should check if the requested withdrawal
amount exceeds the current balance before processing. It should also perform
additional functions

Polymorphism in C++

This example shows how to implement polymorphism.

Program Example: 4.43:

Program code demonstrating polymorphism

#include <iostream>
using namespace std;
// Parent class
class Shape {
public:
// This code shows Virtual function
virtual void draw() {
cout << “The drawn shape is expected here” << endl;
}
};
// Child class Circle
class Circle : public Shape {
public:
// This code will override the draw() method
void draw() override {
cout << “The drawn Circle is expected here” << endl;
}

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for Advanced Secondary Schools

Computer Science Form 5.indd 296 23/07/2024 12:34