Define a class to represent circle. Data members should include radius, circumfe

Question

Define a class to represent circle. Data members should include radius, circumference, area. Member functions should allow the following: A constructor to initialize its data members i.e radius A function to calculate area of the circle A function to calculate circumference of the circle In your program radius should have public access. The value for radius should be initialized externally through a constructor. Data members, Circumference and area Should have private access. Then create an object for class circle and implement the above function members.

Explanation / Answer

#include <iostream>
#include <string>

using namespace std;

class Circle {
private:

double circumference;
double area;


public:

Circle(double r) {
radius = r;
}

double radius;   

double calculateArea() {
return radius*radius*3.1416;
}

double calculateCircumference() {
return radius*3.1416;
}
};

int main() {

Circle c1(1.2);
cout << " Area=" << c1.calculateArea()
<< " circumference=" << c1.calculateCircumference() << endl;
}

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