Question

For this question you will write two (2) constructors in the implementation file: CylinderType.cpp

(Assume that the base class CircleType has a default constructor & assigns 1.0 to its private double radius)

part (a) // The first constructor is a default constructor. Please use height as the CylinderType's private member name in the body.

// It will create a CylinderType object with a radius of 1.0 and height of 1.0

part (b)    // The second constructor should have two formal parameters: (double rad and double heit).

// For full credit use these formal parameter names in your definition.

// Assume the base class CircleType header file has a mutator function named void setRadius (double); so its radius may be initialized

Answer 1

CircleType header file (CircleType.h)

//CircleType header file

class CircleType

{

    private:

    double radius;

    public:

    //default constructor

    CircleType()

    {

        radius=1.0;

    }

    //mutator function

    void setRadius(double r)

    {

        radius=r;

    }

    double getRadius()

    {

        return radius;

    }

};

CylinderType Implementation file (CylinderType.cpp)

#include<iostream>

#include "CircleType.h" //including the circletype header file

using namespace std;

// CylinderType inherits CircleType

class CylinderType: public CircleType

{

    private:

    double height;

    public:

    //default constructor

    CylinderType()

    {

        height=1.0;

    }

    //parameterised constructor

    CylinderType(double r, double h)

    {

        height=h;

        //calling the mutator function to set the radius

        setRadius(r);

    }

    //function to display the radius and height

    void show()

    {

        cout<<"\nThe radius and height are: ";

        cout<<getRadius()<<" and "<<height;

    }

    

};

int main()

{

    CylinderType c, d(2.5,4.6);

    c.show();

    d.show();

    return 0;

}

OUTPUT: