C++

Chapter 10 defined the class circleType to implement the basic properties of a circle. (Add the function print to this class to output the radius, area, and circumference of a circle.)  Now every cylinder has a base and height, where the base is a circle. Design a class cylinderType that can capture the properties of a cylinder and perform the usual operations on the cylinder. Derive this class from the class circleType designed in Chapter 10. Some of the operations that can be performed on a cylinder are as follows: calculate and print the volume, calculate and print the surface area, set the height, set the radius of the base, and set the center of the base. Also, write a program to test various operations on a cylinder. Assume the value of \piπ to be 3.14159.

circleType.h document

#ifndef circleType_H

#define circleType_H

class circleType

{

public:

    void print();

    void setRadius(double r);

      //Function to set the radius. 

      //Postcondition: if (r >= 0) radius = r;

      //               otherwise radius = 0;

    double getRadius();

      //Function to return the radius.

      //Postcondition: The value of radius is returned.

    double area();

      //Function to return the area of a circle.

      //Postcondition: Area is calculated and returned.

    double circumference();

      //Function to return the circumference of a circle.

      //Postcondition: Circumference is calculated and returned.

    circleType(double r = 0);

      //Constructor with a default parameter.

      //Radius is set according to the parameter.

      //The default value of the radius is 0.0;

      //Postcondition: radius = r;

private:

    double radius;

};

#endif

circleType.imp document

//ImplementatioFile for the class circleType

 

#include 

#include "circleType.h"

using namespace std;

void circleType::print()

{

    cout << "Radius = " << radius

         << ", area = " << area()

         << ", circumference = " << circumference();

} 

void circleType::setRadius(double r)

{

    if (r >= 0)

        radius = r;

    else

        radius = 0;

}

double circleType::getRadius()

{

    return radius;

}

double circleType::area()

{

    return 3.1416 * radius * radius;

}

double circleType::circumference()

{

    return 2 * 3.1416 * radius;

}

circleType::circleType(double r)

{

    setRadius(r);

}