Question

C++ program.

Modify example, Program 13-1 from the textbook, by adding a data member, color (use type string) and 3 member functions, setColor(), getColor() and getPerimeter() to the class. Use the main() function belo your code. int main() { Rectangle box; // Define an instance of the Rectangle class double rectWidth; // Local variable for width double rectLength; // Local variable for length string rectColor; // Get the rectangle's width and length from the user. cout << "This program will calculate the area of a\n"; cout << "rectangle. What is the width? "; cin >> rectWidth; cout << "What is the length? "; cin >> rectLength; cout << "What is the color? "; cin >> rectColor; // Store the width and length of the rectangle // in the box object. box.setWidth (rectWidth); box.setLength (rectLength); box.setColor (rectColor); // Display the rectangle's data. cout << "Here is the rectangle's data: \n"; cout << "Width: " « box.getWidth() << endl; cout << "Length: << box.getLength() << endl; cout << "Color: " << box.getColor() << endl; cout << "Area: « box.getArea() << endl; cout << "Perimeter: " « box.getPerimeter() < endl; return 0;

int main()
{
   Rectangle box;     // Define an instance of the Rectangle class
   double rectWidth; // Local variable for width
   double rectLength; // Local variable for length
   string rectColor;

   // Get the rectangle's width and length from the user.
   cout << "This program will calculate the area of a\n";
   cout << "rectangle. What is the width? ";
   cin >> rectWidth;
   cout << "What is the length? ";
   cin >> rectLength;
   cout << "What is the color? ";
   cin >> rectColor;

   // Store the width and length of the rectangle
   // in the box object.
   box.setWidth(rectWidth);
   box.setLength(rectLength);
   box.setColor(rectColor);

   // Display the rectangle's data.
   cout << "Here is the rectangle's data:\n";
   cout << "Width: " << box.getWidth() << endl;
   cout << "Length: " << box.getLength() << endl;
   cout << "Color: " << box.getColor() << endl;
   cout << "Area: " << box.getArea() << endl;
   cout << "Perimeter: " << box.getPerimeter() << endl;
   return 0;

}
}

Answer 1

Code:

#include<iostream>
using namespace std;

class Rectangle
{
   public:
       double rectLength; //length of rectangle
       double rectWidth; //breadth of rectangle
       string rectColor;
       /* declaring member functions */
       void setLength(double rectLength);
       void setWidth(double rectWidth);
       void setColor(string rectColor);
       double getLength();
       double getWidth();
       string getColor();
       double getArea();
       double getPerimeter();
};

void Rectangle::setLength(double length)
{
   rectLength = length;
}
void Rectangle::setWidth(double width )
{
   rectWidth = width;
}

void Rectangle::setColor(string color )
{
   rectColor = color;
}

double Rectangle::getLength()
{
   return rectLength;
}
double Rectangle::getWidth()
{
   return rectWidth;
}

string Rectangle::getColor()
{
   return rectColor;
}

double Rectangle::getArea()
{
   return rectWidth*rectLength;
}

double Rectangle::getPerimeter()
{
   return 2*(rectWidth+rectLength);
}

int main()
{
Rectangle box; // Define an instance of the Rectangle class
double rectWidth; // Local variable for width
double rectLength; // Local variable for length
string rectColor;

// Get the rectangle's width and length from the user.
cout << "This program will calculate the area of a\n";
cout << "rectangle. What is the width? ";
cin >> rectWidth;
cout << "What is the length? ";
cin >> rectLength;
cout << "What is the color? ";
cin >> rectColor;

// Store the width and length of the rectangle
// in the box object.
box.setWidth(rectWidth);
box.setLength(rectLength);
box.setColor(rectColor);

// Display the rectangle's data.
cout << "Here is the rectangle's data:\n";
cout << "Width: " << box.getWidth() << endl;
cout << "Length: " << box.getLength() << endl;
cout << "Color: " << box.getColor() << endl;
cout << "Area: " << box.getArea() << endl;
cout << "Perimeter: " << box.getPerimeter() << endl;
return 0;

}

Output:

This program will calculate the area of a rectangle. What is the width? 2 What is the length? 2 What is the color? Red Here is the rectangle's data: Width: 2 Length: 2 Color: Red Area: 4 Perimeter: 8