//shape.h
#ifndef SHAPE_H
#define SHAPE_H
#include "color.h"
class Shape
{
protected:
    Color* colorPtr;
public:
    virtual void setColor(Color * color){
        colorPtr = color;
    }
    virtual void draw(){
    }
};
#endif // SHAPE_H
//rectangle.h 
#ifndef RECTANGLE_H
#define RECTANGLE_H
#include "shape.h"
class Rectangle :public Shape
{
public:
    void draw() override{
        colorPtr->paint("rectangle");
    }
};
#endif // RECTANGLE_H
//square.h 
#ifndef SQUARE_H
#define SQUARE_H
#include "shape.h"
class Square :public Shape
{
public:
    void draw() override{
        colorPtr->paint("square");
    }
};
#endif // SQUARE_H
//circle.h
#ifndef CIRCLE_H
#define CIRCLE_H
#include "shape.h"
class Circle :public Shape
{
public:
    void draw() override{
        colorPtr->paint("circle");
    }
};
#endif // CIRCLE_H
//color.h
#ifndef COLOR_H
#define COLOR_H
#include <string>
class Color
{
public:
    virtual void paint(std::string shape){
    };
};
#endif // COLOR_H
//black.h
#ifndef BLACK_H
#define BLACK_H
#include "color.h"
#include <iostream>
class Black :public Color
{
public:
    void paint(std::string shape) override{
        std::cout << "black " << shape << std::endl;
    }
};
#endif // BLACK_H
//white.h
#ifndef WHITE_H
#define WHITE_H
#include "color.h"
#include <iostream>
class White :public Color
{
public:
    void paint(std::string shape) override{
        std::cout << "white " << shape << std::endl;
    }
};
#endif // WHITE_H
//grey.h
#ifndef GREY_H
#define GREY_H
#include "color.h"
#include <iostream>
class Grey :public Color
{
public:
    void paint(std::string shape) override{
        std::cout << "grey " <<shape << std::endl;
    }
};
#endif // GREY_H
//main.cpp
#include <iostream>
#include "color.h"
#include "white.h"
#include "black.h"
#include "grey.h"
#include "square.h"
#include "rectangle.h"
#include "circle.h"
using namespace std;
int main()
{
    Color* whitePtr = new White;
    Shape* square = new Square;
    square->setColor(whitePtr);
    square->draw();
    Shape* rectange = new Rectangle;
    rectange->setColor(whitePtr);
    rectange->draw();
    return 0;
}