Polymorphic Points, Circles, and Cylinders Requirements
Modify the previous assignment, in which you developed Point, Circle, and Cylinder classes, in the
following ways:
Add an abstract base class named Shape (define it in shape.h).
Point inherits from Shape. Circle continues to inherit from Point and Cylinder continues to
inherit from Circle.
Point, Cylinder, and Circle must continue to support the insertion operator (<<), but it must
also support polymorphism (i.e. work with pointers to Shapes). See the example below.
HINT: define the insertion operator ONLY in Shape, but have it call a virtual function that
is redefined in each inherited class.
The following main.cpp file:
#include <iostream
#include "shape.h"
#include "point.h"
#include "circle.h"
#include "cylinder.h"
using namespace std;
int main()
{
Shape *s[3];
Point p(4,4);
Circle c(5,5,5);
Cylinder y (6, 6, 6, 6);
s[0] = &p;
s[1] = &c;
s[2] = &y;
cout << *(s[0]) << endl << endl;
cout << *(s[1]) << endl << endl;
cout << *(s[2]) << endl << endl;
return 0;
}
produces this output:
Point at (4, 4)
Circle with center = (5, 5); Radius = 5; Area = 78.5397
Cylinder with center = (6, 6); Radius = 6; Height = 6; Volume = 678.583
Submit 7 files (shape.h, point.h, point.cpp, circle.h, circle.cpp, cylinder.h, and cylinder.cpp) combined as
a single zip file. The graders will compile your source with their main.cpp to test program functionality.
