//prog.cpp#include "shapes.hpp"using namespace std;int main() {        vector<Rectangle*> rectangles;    rectangles.push_back(new Rectangle(3, 5));      // Die beiden Argumente geben Breite und Höhe an    rectangles.push_back(new Rectangle(5, 7));      // Die beiden Argumente geben Breite und Höhe an    rectangles.push_back(new FilledRectangle(7, 5));// Die beiden Argumente geben Breite und Höhe an    rectangles.push_back(new Square(6));            // Das Argument gibt die Seitenlänge an    rectangles.push_back(new FilledSquare(7));      // Das Argument gibt die Seitenlänge an        // for (Rectangle* r : rectangles) {    //     r->print();    // }        vector<Triangle*> triangles;    // Bei den Dreiecken soll es sich um gleichschenklige, rechtwinklige    // Dreiecke handeln. Der rechte Winkel wird von von den gleichlangen Seiten    // eingeschlossen.    triangles.push_back(new LeftTriangle(10));      // Das Argument gibt die Länge der    triangles.push_back(new RightTriangle(7));      // beiden gleichlangen Seiten an.        // for (Triangle* t : triangles) {    //     t->print();    // }        vector<Shape*> shapes;    // für jedes r in rectangles    for (Rectangle* r : rectangles) {        shapes.push_back(r);    }        // für jedes t in triangles    for (Triangle* t : triangles) {        shapes.push_back(t);    }        // für jedes s in shapes    for (Shape *s: shapes) {        processShape(*s);    }        ////////////////////////////        for (Shape *s: shapes) {        delete s;    }}

//shapes.hpp#ifndef SHAPES_HPP#define SHAPES_HPP#include <iostream>#include <vector>class Shape{public:    //virtual void print() const = 0;        virtual void print() const;    virtual double area() const = 0;        virtual double perimeter() const = 0;};class Rectangle:public Shape{protected:        int width;        int height;    public:        Rectangle(int width, int height);        virtual void print() const;        virtual double area() const;        virtual double perimeter() const;};class FilledRectangle:public Rectangle{public:        FilledRectangle(int width, int height);        virtual void print() const;};class Square:public Rectangle{public:    Square(int length);};class FilledSquare:public FilledRectangle{public:    FilledSquare(int length);};class Triangle:public Shape{protected:        int length;    ////////////////    public:        Triangle(int length);        virtual double area() const;        virtual double perimeter() const;};class LeftTriangle:public Triangle{public:        LeftTriangle(int lenght);        virtual void print() const;};class RightTriangle:public Triangle{public:        RightTriangle(int length);        virtual void print() const;};void processShape(const Shape& s);#endif

////shapes.cpp#include "shapes.hpp"using namespace std;void Shape::print() const{    //Error;}Rectangle::Rectangle(int width, int height){    this->width = width;    this->height = height;}void Rectangle::print()const{    for (int i = 0; i < height; i++)    {        for (int j = 0; j < width; j++)        {            if (i > 0 && i < height - 1 && j > 0 && j < width - 1)                printf(" ");            else                printf("*");        }        printf("\n");    }}double Rectangle::area() const{    return width * height;}double Rectangle::perimeter() const{    return 2 * (width + height);}FilledRectangle::FilledRectangle(int width, int height):Rectangle(width, height){}void FilledRectangle::print() const{    for (int i = 0; i < height; i++)    {        for (int j = 0; j < width; j++)        {            printf("*");        }        printf("\n");    }}Square::Square(int length):Rectangle(length, length){}FilledSquare::FilledSquare(int length):FilledRectangle(length, length){}Triangle::Triangle(int length){    this->length = length;}double Triangle::area() const{    return length * length / 2;}double Triangle::perimeter() const{    return (2 + 1.414) * length;        ///////////////}LeftTriangle::LeftTriangle(int length):Triangle(length){}void LeftTriangle::print() const{    for (int i = 0; i < length; i++)    {        for (int j = 0; j < length; j++)        {            if (j == 0 || i == j || i == length - 1)                printf("*");            else                printf(" ");        }        printf("\n");    }}RightTriangle::RightTriangle(int length):Triangle(length){}void RightTriangle::print()const{    for (int i = 0; i < length; i++)    {        for (int j = 0; j < length; j++)        {            if (j == length - 1 || length - i - 1 == j || i == length - 1)                printf("*");            else                printf(" ");        }        printf("\n");    }}void processShape(const Shape& s) {    s.print();    cout << "Flaeche: " << s.area() << endl;    cout << "Umfang: " << s.perimeter() << endl;    cout << endl << endl;}