Please add //comments to the header file below. #ifndef CIRCLE_H_INCLUDED #defin

Question

Please add //comments to the header file below.

#ifndef CIRCLE_H_INCLUDED
#define CIRCLE_H_INCLUDED
#include <iostream>

using namespace std;

class Circle

{

private:

double radius;

// declaration of public methods in header file
public:

Circle()

{
// default value
radius = 1;

}

void input()

{

cout << "Enter radius: ";

cin >> radius;

}

void print()

{

double PI = 3.14159;

double area = PI * radius * radius;

double circumference = 2 * PI * radius;

cout << "Circle with radius = " << radius << ", area = " << area

<< ", circumference = " << circumference << endl;

}

};

#endif // CIRCLE_H_INCLUDED

Explanation / Answer

#ifndef CIRCLE_H_INCLUDED #define CIRCLE_H_INCLUDED #include using namespace std; class Circle // Circle class { private: double radius; // private variable radius to hold radius of the circle // declaration of public methods in header file public: Circle() // default constructor which initializes radius to 1 { // default value radius = 1; } void input() // input method which reads a value into radius variable { cout > radius; } void print() // print method to print radius, area and circumference of the circle { double PI = 3.14159; double area = PI * radius * radius; // calculate area of circle double circumference = 2 * PI * radius; // calculate circumference circle cout

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