C++ : Shape, color, triangle, and rectangle class and derived class files.

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There are 9 files.

main.cpp (given)

shape.h / shape.cpp (given)

color.h (given) / color.cpp

triangle.h (given) / triangle.cpp

rectangle.h (given) / rectangle.cpp

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Problems:

- Shape.cpp needs a class file to be made, shape.h. (Need shape.h)

- Color.cpp is a derived class of Color.h. Color class models the color of an item (Need color.cpp)

- Triangle.cpp is a derived class of Triangle.h. Triangle class models triangle with side lengths a, b, c (Need triangle.cpp)

- Rectangle.cpp is a derived class of Rectangle.h. Rectangle class models Rectangle with side lengths l, w (Need rectangle.cpp)

The main.cpp does all the math, but the other files just set up the info to be pulled from. I'm guessing the shape.cpp is an idea of what the other .cpp files should be like. Thanks in advance!

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[shape.cpp]

#include "shape.h"

Shape::Shape() // Initializes private attribute c to <0,0,0> { c = new Color; }

Shape::Shape(int r, int g, int b) // Initializes Color object pointed to by c to { c = new Color; c->setRed(r); c->setGreen(g); c->setBlue(b); }

Shape::~Shape() // Deallocates Color object { delete c; }

Color Shape::getColor() const // Returns color of object { return *c; }

double Shape::area() const // Returns default area of 0.0 -- must be a polymorphic function { return 0.0; }

double Shape::perimeter() const // Returns default perimeter of -1.0 -- must be a polymorphic function { return -1.0; }

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[color.h]

#include using namespace std;

#ifndef COLOR_H #define COLOR_H

class Color { private: int red; // Amount of red 0-255 int green; // Amount of green 0-255 int blue; // Amount of blue 0-255

public: Color(); // Initializes red, green, and blue to zero void setRed(int rr); // Sets red to rr void setGreen(int gg); // Sets green to gg void setBlue(int bb); // Sets blue to bb

int getRed() const; // Returns red int getGreen() const; // Returns green int getBlue() const; // Returns blue

void print() const // Writes to std output { cout << "<" << getRed() << "," << getGreen() << "," << getBlue() << ">"; } };

#endif ------------------------------------------------------------------------------------------

[triangle.h]

#include "shape.h"

#ifndef TRIANGLE_H #define TRIANGLE_H

class Triangle : public Shape { private: double a, b, c; // Side lengths

public: Triangle(); // Initializes a, b, c to 0.0 and red, green, blue to 0

Triangle(double aaa, double bbb, double ccc, // Initializes a, b, c to aaa, bbb, ccc and int rr, int gg, int bb); // red, green, blue to rr, gg, bb respectively

double area() const; // Returns area value computed from a, b, c

double perimeter() const; // Returns perimeter value computed from a, b, c };

#endif ------------------------------------------------------------------------------------------

[rectangle.h]

#include "shape.h"

#ifndef RECTANGLE_H #define RECTANGLE_H

class Rectangle : public Shape { private: double l, w; // Side lengths

public: Rectangle(); // Initializes l, w to 0.0 and red, green, blue to 0

Rectangle(double ll, double ww, // Initializes l, w to ll, ww and int rr, int gg, int bb); // red, green, blue to rr, gg, bb respectively

double area() const; // Returns area value computed from l, w

double perimeter() const; // Returns perimeter value computed from l, w };

#endif