• Define a base class shapeClass , the class o Has two data members width and height , which are integers o Has two member functions setWidth and setHeight , which are used to change the two data members • Define a new class rectangleClass which is derived from the base class shapeClass , the class o Has a member function getArea , which calculates the area • In the main function, create an object of rectangleClass , set its width and height, and then calculate its area using member function.
OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
Since the Programming language is not mentioned in the question, we will answer this question in Java language program. If you want this program to be executed in some other programming language, kindly resubmit the question with specific programming language.
PROGRAM:
//Defining shapeClass
class shapeClass
{
//Declaring two data members
int width, height;
public shapeClass()
{
}
//Defining setWidth()
public void setWidth(int width)
{
//Setting width
this.width=width;
}
//Defining setHeight()
public void setHeight(int height)
{
//Setting height
this.height=height;
}
}
//Defining the rectangleClass which inherits shapeClass
class rectangleClass extends shapeClass
{
//Defining getArea()
public int getArea()
{
//Returning area
return width*height;
}
}
//Driver class
public class Main
{
//Defining main()
public static void main(String[] args) {
//Creating object for rectangleClass
rectangleClass r=new rectangleClass();
//Calling member functions and printing the area
r.setWidth(8);
r.setHeight(6);
System.out.println("Area of Rectangle: "+r.getArea());
}
}
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