c++

Define a pure abstract base class called BasicShape. The BasicShape class should have the following members: Private Member Variable: - area a double used to hold the shape's area Public Member Functions: - getArea This function should return the value in the member variable area. - calcArea This function should be a pure virtual function. Next, define a class named circle. It should be derived from the BasicShape class. It should have the following members: Private Member Variables: - centerX A long integer used to hold the x coordinate of the circle's center. - centery A long integer used to hold the y coordinate of the circle's center - radius A double used to hold the circle's radius. Public Member Functions: - constructor Accepts values for centerX, centery and radius. Should call the overridden calcArea function described below. -getCenterX return the value of centerX -getCentery return the value of centery - calcArea calculates the area of the circle (area = 3.14159 radius radius) and stores the result in the inherited member area. Next, define a class named Rectangle. It should be derived from the BasicShape class. It should have the following members: Private Member Variables: - width, a long integer used to hold the width of the rectangle. -length, a long integer used to hold the length of the rectangle. Public Member Functions: - constructor accepts values for width and length. Should call the overridden calcArea function described below. - getWidth returns the value in width. - getLengh returns the value in length. - calcArea calculates the area of the rectangle (area = length width) and stores the result in the inherited member area. After you have created these classes, create a driver program that defines a Circle object and a Rectangle object. Demonstrate in this driver program that each object properly calculates and reports its area. Hint: You will need a setArea function in the BasicShape class to store the calculated area