Question

Hello I have a question. I would like to check if the code follows this requirement.

Rectangle.h - A complete Rectangle Class including both declaration and definition

appRectangle,cpp

separate in two different files the class definition and implementation

Code:

rectangle.h

// Rectangle class declaration.

class Rectangle

{

private:

double width;

double length;

public:

void setWidth(double);

void setLength(double);

double getWidth() const;

double getLength() const;

double getArea() const;

};

//**************************************************

// setWidth assigns a value to the width member. *

//**************************************************

void Rectangle::setWidth(double w)

{

width = w;

}

//**************************************************

// setLength assigns a value to the length member. *

//**************************************************

void Rectangle::setLength(double len)

{

length = len;

}

//**************************************************

// getWidth returns the value in the width member. *

//**************************************************

double Rectangle::getWidth() const

{

return width;

}

//****************************************************

// getLength returns the value in the length member. *

//****************************************************

double Rectangle::getLength() const

{

return length;

}

//*****************************************************

// getArea returns the product of width times length. *

//*****************************************************

double Rectangle::getArea() const

{

return width * length;

}

rectangle.cpp

#include<iostream>
#include "rectangle.h"
using namespace std;
int main()

{
Rectangle *rec=new Rectangle();

double width,length;
cout<<"This program will calculate the area of a \nreactangle.";
cout << " What is the width? ";

cin >> width; // Get the width

cout << "What is the length? ";

cin >> length; // Get the length

rec->setLength(length);
rec->setWidth(width);

cout << "here is rectangle's data\n";
cout<<"width "<<rec->getWidth()<<endl;
cout<<"length "<<rec->getLength()<<endl;
cout<<"Area "<<rec->getArea()<<endl;

return 0;

}

Answer 1

Hello,

This follows the following requirement 1 defined in file Rectangle.h file. You should have given this file name as same as the class name "Rectangle" and traditionally we follow this approach. But you here you have given it as "rectangle.h" instead of "Rectangle.h"

Requirement 1:

A complete Rectangle Class including both declaration and definition

Answer: You can change the name of the file from "rectangle.h" to "Rectangle.h", to match with the class name.

Requirement 2: Implementation needs to be in different file and here you are using "rectangle.cpp" file which is correct.