Question

Using separate files, write the definition for a class called Point and a class called Circle.
The class point has the data members x (double) and y (double) for the x and y coordinates.

The class has the following member functions:
a) void set_x(double) to set the x data member
b) void set_y(double) to set the y data member
c) double get_x() to return the the x data member
d) double get_y() to return the the y data member
e) default constructor that initializes the x and y to 0.0 both.
f) A constructor that initializes the x to the value given in the first parm, and the y to the value given in the second parm.
g) Double Distance(Point) to return the distance between an object point and the point passed as parameter, which is calculated as:
The class Circle that includes the class Point. The class Circle has the following member variables radius (double) and center an object of type Point (previous class).

The class Circle should have the following member functions:
a) Default Constructor, that sets the radius to 1.0 and the center to the (0.0, 0.0)
b) A constructor that accepts the radius of the circle as an argument.
c) A constructor, accepts three double parameters, the first one for the radius, the second one for the x coordinates of the center and the third one for the y coordinate of the center.
d) setRadius, a mutator function for the radius data member.
e) getRadius, an accessor function for the radius data member.
f) SetCenter, an mutator function for the center data member.
g) GetCenter, an accessor function for the center data member.
h) getArea. Returns the area of the circle, which is calculated as: area = pi * radius * radius
i) getDiameter. Returns the diameter of the circle, which is calculated as: diameter = radius * 2
j) getCircumference. Returns the circumference of the circle, which is calculated as: circumference = 2 * pi * radius
k) sameArea that has one parm of type Circle. sameArea returns true if the two Circles have the same area, and returns false if they don't.

Write client code (main.cpp) to create two Circles objects. Set the radius and the center of the first circle to 1.0 and (1.0, 1.0). Set the radius and the center of the second circle to 2.0 and (4.0, 4.5). Display each circle and its area and perimeter

Write client code to create a third Circle object which is not initialized, and fourth Circle object which is initialized to have radius 6.0 and center (6.0, 7.0).
Display each circle (third and fourth) ‘s area and perimeter. Check whether the two circles have the same area and print a message indicating the result. Set the radius and center of the third circle to 6.0 and (6.0, 7.0). Display each circle (third and fourth) and its area and perimeter again.
Again, check whether the two circles have the same area and print a message indicating the result.
Print out the distance between the centers of the two circles.
c++

Answer 1

pointcircle.h:

#ifndef POINT_H_
#define POINT_H_
class Point
{
private:
double x,y;
public:
Point();
Point(double x, double y);
void set_x(double x);
void set_y(double y);
double get_x();
double get_y();
double distance(Point other);
};

class Circle
{
private:
double r;
Point cen;
public:
Circle();
Circle(double r);
Circle(double r, double x, double y);
void setRadius(double x);
void setCentre(double x, double y)
double getRadius();
Point getCentre();
double getArea();
double getDiameter();
double getCircumference();
bool sameArea(Circle c);
};
#endif /* POINT_H_ */

pointcircle.cpp:

#include "pointcircle.h"
#include <cmath>
Point::Point()
{
x = 0.0;
y = 0.0;
}
Point::Point(double x, double y)
{
this->x = x;
this->y = y;
}
void Point::set_x(double x)
{
this->x = x;
}
void Point::set_y(double y)
{
this->y = y;
}
double Point::get_x()
{
return x;
}
double Point::get_y()
{
return y;
}
double Point:: distance(Point other)
{
double d = sqrt(pow(x-other.x,2) + pow(y-other.y,2));
return d;
}
Circle::Circle()
{
r=1.0;
cen.set_x(0.0);
cen.set_y(0.0);
}
Circle::Circle(double r)
{
this->r=r;
cen.set_x(0.0);
cen.set_y(0.0);
}
Circle::Circle(double r, double x, double y)
{
this->r=r;
cen.set_x(x);
cen.set_y(y);
}
void Circle::setRadius(double x)
{
this->r=x;
}
void Circle::setCentre(double x, double y)
{
cen.set_x(x);
cen.set_y(y);
}
double Circle::getRadius()
{
return this->r;
}
Point Circle::getCentre()
{
return this->cen;
}
double Circle::getArea()
{
return (22/7)*r*r;
}
double Circle::getDiameter()
{
return 2*r;
}
double Circle::getCircumference()
{
return (22/7)*2*r;
}
bool Circle::sameArea(Circle c)
{
if(this->getArea()==c.getArea())
return true;
else
return false;
}

main.cpp:

#include "pointcircle.h"
#include <iostream>
using namespace std;
int main()
{
Circle c1(1.0,1.0,1.0), c2(2.0,4.0,4.5);
cout<<"Area of circle 1: "<<c1.getArea()<<endl;
cout<<"Perimeter of circle 1: "<<c1.getCircumference()<<endl;
cout<<"Area of circle 2: "<<c2.getArea()<<endl;
cout<<"Perimeter of circle 2: "<<c2.getCircumference()<<endl<<endl;
Circle c3,c4(6.0,6.0,7.0);
cout<<"Area of circle 3: "<<c3.getArea()<<endl;
cout<<"Perimeter of circle 3: "<<c3.getCircumference()<<endl;
cout<<"Area of circle 4: "<<c4.getArea()<<endl;
cout<<"Perimeter of circle 4: "<<c4.getCircumference()<<endl;
if(c3.sameArea(c4))
cout<<"Same Area"<<endl;
else
cout<<"Different Area"<<endl<<endl;
c3.setRadius(6.0);
c3.setCentre(6.0,7.0);
cout<<"Area of circle 3: "<<c3.getArea()<<endl;
cout<<"Perimeter of circle 3: "<<c3.getCircumference()<<endl;
cout<<"Area of circle 4: "<<c4.getArea()<<endl;
cout<<"Perimeter of circle 4: "<<c4.getCircumference()<<endl;
if(c3.sameArea(c4))
cout<<"Same Area"<<endl;
else
cout<<"Different Area"<<endl<<endl;
}

pointcircle Area of circle 1: 3 Perimeter of circle 1: 6 Area of circle 2: 12 Perimeter of circle 2: 12 Area of circle 3: 3 Perimeter of circle 3: 6 Area of circle 4: 188 Perimeter of circle 4: 36 Different Area Area of circle 3: 188 Perimeter of circle 3: 36 Area of circle 4: 188 Perimeter of circle 4: 36 Same Area Press any key to continue .