Q.1 (Marks 5)
Write a program that has an abstract base class named Quad. This class should have
four member data variables (floats) representing side length and a pure virtual function Area. It should
also have a method for setting the data variables. Derive a class Rectangle from Quad and override the Area method
so that it returns the area of the Rectangle. Write a main function that creates a Rectangle and sets the side lengths.
Also write a toplevel function that will take a parameter of type Quad and return the value of the appropriate
Area function.
#include<iostream>
using namespace std;
class quad
{
public:
float area;
float length;
float width;
virtual float get_area()=0;
};
class Rectangle: public quad{
public:
float set_length(float l){
length=l;}
float get_length(){
return length;}
float set_width(float w){
width=w;}
float get_width()
{return width;}
float get_area(){
return length*width; }
};
int main()
{
Rectangle r1;
r1.set_length(3.5);
r1.set_width(4.3);
cout<<r1.get_area();
return 0;
}
