Question

Rectangle Class in C++

Create a Rectangle class that has two data members: length_ and width_. Create the corresponding accessor and mutator functions to access and change both data members.

Create a member function area that returns the area of the Rectangle object. Finally, create a function longest_rectangle that accepts two Rectangle objects as parameters and returns the Rectangle object with the longer length.

Write the Rectangle class and the longest_rectangle function prototype in rectangle.hpp. Take note that longest_rectangle is not a member function of the Rectangle class. Provide the function's implementation in rectangle.cpp.

Complete main.cpp according to the comments provided in the file.

Sample Output:

Rectangle 1
Please enter the length: 2
Please enter the width: 3
Rectangle 1 created with length 2 and width 3
The area of Rectangle 1 is: 6

Rectangle 2
Please enter the length: 4
Please enter the width: 5
Rectangle 2 created with length 4 and width 5
The area of Rectangle 2 is: 20

The longest rectangle has a length of 4, a width of 5, and an area of 20.

Submission checklist

1. Created function prototype and stored in .hpp file.
2. Created function implementation and stored in .cpp file (see reference).
3. Call function in the driver
4. Compiled and ran the driver (main).
5. Manually checked for compilation and logical errors.
6. Ensured no errors on the unit test (make test).
7. Followed advice from the stylechecker (make stylecheck).
8. Followed advice from the formatchecker to improve code readbility (make formatcheck).

Answer 1

#######################################
            main.cpp
#######################################
#include <iostream>
#include "rectangle.hpp"


using namespace std;

Rectangle longest_rectangle(Rectangle r1, Rectangle r2) {
    if(r1.getLength() > r2.getLength()) {
        return r1;
    } else {
        return r2;
    }
}



int main() {
    int l, w;
    Rectangle r1, r2;
    cout << "Rectangle 1" << endl;
    cout << "Please enter the length: ";
    cin >> l;    
    cout << "Please enter the width: ";
    cin >> w;
    r1.setLength(l);
    r1.setWidth(w);

    cout << "Area of rectangle 1 is: " << r1.getArea() << endl;
    
    cout << "Rectangle 2" << endl;
    cout << "Please enter the length: ";
    cin >> l;    
    cout << "Please enter the width: ";
    cin >> w;
    r2.setLength(l);
    r2.setWidth(w);
    
    cout << "Area of rectangle 2 is: " << r1.getArea() << endl;

    Rectangle result = longest_rectangle(r1, r2);
    cout << "The longest rectangle has a length of " << result.getLength() << ", a width of " << result.getWidth() << ", and an area of " << result.getArea() << endl;
}



#######################################
       rectangle.cpp
#######################################
#include "rectangle.hpp"

Rectangle::Rectangle(){
    this->length_ = 0;
    this->width_ = 0;
}
int Rectangle::getLength() {
    return this->length_;
}
void Rectangle::setLength(int length_) {
    this->length_ = length_;
}
int Rectangle::getWidth() {
    return this->width_;
}
void Rectangle::setWidth(int width_) {
    this->width_ = width_;
}
int Rectangle::getArea() {
    return this->width_ * this->length_;
}
ostream& operator<<(ostream &out, Rectangle &rectangle) {
    out << "length_ " << rectangle.length_ << endl;
    out << "width_ " << rectangle.width_ << endl;
    return out;
}




#######################################
       rectangle.hpp
#######################################
#ifndef _RECTANGLE_H_
#define _RECTANGLE_H_
#include <iostream>

using namespace std;

class Rectangle {
    private:
    int length_;
    int width_;

    public:
    Rectangle();
    int getLength();
    void setLength(int);
    int getWidth();
    void setWidth(int);
    friend ostream& operator<<(ostream &out, Rectangle &rectangle);
    int getArea();
};

#endif

**************************************************

Thanks for your question. We try our best to help you with detailed answers, But in any case, if you need any modification or have a query/issue with respect to above answer, Please ask that in the comment section. We will surely try to address your query ASAP and resolve the issue.

Please consider providing a thumbs up to this question if it helps you. by Doing that, You will help other students, who are facing similar issue.