You should use the Circle class as reference for this activity. The code is contained in a zip folder found at 
http://csweb.wooster.edu/dbyrnes/cs120/Handouts/SimpleCircle%20with%20Operators.zip

/* Rectangle.h
 * Class definition for Rectangle class
 *
 *  set_values initializes the width and height of the    
 *  rectangle
 *  area returns the current area of the rectangle
 *
 * created by : D. Byrnes
 * creation date : 8/24/18
 */

#ifndef Rectangle_h
#define Rectangle_h

class Rectangle {
public:
    void set_values (int,int);
    int area ();

    //Add a Parameterized Constructor with default values. Remove the set_values method.
    
    
    //Add setters for the data fields of a Rectangle
    
    
    //Add getters for the data fields of a Rectangle
    
    
    //Add several other useful methods, your choice


    //If time permits - Try adding ostream and istream operator overloads

    
    //If time permits - Try adding the minimal necessary set of relational ops needed to compare two rectangle objects (this is an interesting problem)
     
private:
    int width, height;
    
};
#endif

void Rectangle::set_values (int x, int y)
{
    width = x;
    height = y;
}

int Rectangle :: area()
{
    return width * height;
}


   //Add implementations for new methods

 
//
//  main.cpp
//  Using the Rectangle class
//
//  Created by Denise Byrnes on 8/24/18.
//  Copyright © 2018 Denise Byrnes. All rights reserved.
//

//Add code segments to exercise your new methods

#include <iostream>


using namespace std;

int main ()
{
    Rectangle rect;
    rect.set_values (3,4);
    cout << "area: " << rect.area() << endl;
    return 0;
}