C++ code. 8. Circle Class Write a Circle class that has the following member var
ID: 3765007 • Letter: C
Question
C++ code.
8. Circle Class Write a Circle class that has the following member variables : • radius: a double • pi: a double initialized with the value 3.14159 The class should have the following member functions: • Default Constructor . A default constructor that sets radius to 0.0. • Constructor . Accepts the radius of the circle as an argument . • setRadius. A mutator function for the radius variable . • getRadius. An accessor function for the radius variable . • getArea. Returns the area of the circle, which is calculated as area = pi * radius * radius • getDiameter. Returns the diameter of the circle, which is calculated as diameter = radius * 2 • getCircumference. Returns the circumference of the circle, which is calculated as circumference = 2 * pi * radius Write a program that demonstrates the Circle class by asking the user for the circle’s radius, creating a Circle object , and then reporting the circle’s area, diameter, and circumference.
Explanation / Answer
#include <cstdlib>
#include <iostream>
using namespace std;
class Circle
{
public:
double radius;
double Pi;
Circle()
{
radius=0.0;
Pi= 3.14159;
}
Circle(double r)
{
radius=r;
}
void setRadius(double r)
{
radius=r;
}
double getRadius()
{
return radius;
}
double getArea()
{
return Pi*getRadius()*getRadius();
}
double getDiameter()
{
return 2*getRadius();
}
double getCircumference()
{
return 2*Pi*getRadius();
}
};
int main(int argc, char *argv[])
{
double r;
cout<<"Enter Circle radius"<<endl;
cin>>r;
Circle c;
c.setRadius(r);
cout<<"Area of Circle is: "<<c.getArea()<<endl;
cout<<"Diameter of Circle is: "<<c.getDiameter()<<endl;
cout<<"Circumference of Circle is: "<<c.getCircumference()<<endl;
system("PAUSE");
return EXIT_SUCCESS;
}
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.