S#3

#include <iostream>
#include <cmath>

using namespace std;

class Line {
protected:
    double x1, y1;
    double x2, y2;
public:
    Line() {
        x1 = 0;
        y1 = 0;
        x2 = 0;
        y2 = 0;
    }
    Line(double x1, double y1, double x2, double y2) {
        this->x1 = x1;
        this->y1 = y1;
        this->x2 = x2;
        this->y2 = y2;
    }
    Line(const Line &L) {
        x1 = L.x1;
        y1 = L.y1;
        x2 = L.x2;
        y2 = L.y2;
    }
    ~Line() {}
    void print() {
        cout << "((" << x1 << ";" << y1 << "), (" << x2 << ";" << y2 << "))";
    }
    double getParam() {
        return sqrt(pow((x2 - x1), 2) + pow((y2 - y1), 2));
    }
    double getx1() {
        return x1;
    }
    double getx2() {
        return x2;
    }
    double gety1() {
        return y1;
    }
    double gety2() {
        return y2;
    }
    Line operator = (const Line &L) {
        return Line(this->x1 = L.x1, this->y1 = L.y1, this->x2 = L.x2, this->y2 = L.y2);
    }
};



class Rectangle : public Line {
protected:
    Line l1, l2, l3, l4;
public:
    Rectangle() {
        l1 = Line(0, 0, 0, 0);
        l2 = Line(0, 0, 0, 0);
        l3 = Line(0, 0, 0, 0);
        l4 = Line(0, 0, 0, 0);
    }
    Rectangle(Line l1, Line l2, Line l3, Line l4) {
        this->l1 = l1;
        this->l2 = l2;
        this->l3 = l3;
        this->l4 = l4;
    }
    Rectangle(const Rectangle &R) {
        this->l1 = R.l1;
        this->l2 = R.l2;
        this->l3 = R.l3;
        this->l4 = R.l4;
    }
    ~Rectangle() {}
    void print() {
        cout << "(";
        l1.print();
        cout << ", ";
        l2.print();
        cout << ", ";
        l3.print();
        cout << ", ";
        l4.print();
        cout << ")" << endl;
    }
    double getParam() {
        return l1.getParam() * l1.getParam();
    }
    double getxc() {
        return (fmax(fmax(fmax(this->l1.getx1(), this->l1.getx2()), fmax(this->l2.getx1(), this->l2.getx2())), fmax(fmax(this->l3.getx1(), this->l3.getx2()), fmax(this->l4.getx1(), this->l4.getx2()))) +
            fmin(fmin(fmin(this->l1.getx1(), this->l1.getx2()), fmin(this->l2.getx1(), this->l2.getx2())), fmin(fmin(this->l3.getx1(), this->l3.getx2()), fmin(this->l4.getx1(), this->l4.getx2())))) / 2;
    }
    double getyc() {
        return (fmax(fmax(fmax(this->l1.gety1(), this->l1.gety2()), fmax(this->l2.gety1(), this->l2.gety2())), fmax(fmax(this->l3.gety1(), this->l3.gety2()), fmax(this->l4.gety1(), this->l4.gety2()))) +
            fmin(fmin(fmin(this->l1.gety1(), this->l1.gety2()), fmin(this->l2.gety1(), this->l2.gety2())), fmin(fmin(this->l3.gety1(), this->l3.gety2()), fmin(this->l4.gety1(), this->l4.gety2())))) / 2;
    }
    double getSide() {
        return l1.getParam();
    }
    Rectangle operator = (const Rectangle &R) {
        return Rectangle(this->l1 = R.l1, this->l2 = R.l2, this->l3 = R.l3, this->l4 = R.l4);
    }
};

class Circle : public Rectangle {
protected:
    double x1, y1, R;
public:
    Circle() {
        x1 = 0;
        y1 = 0;
        R = 0;
    }
    Circle(double x1, double y1, double R) {
        this->x1 = x1;
        this->y1 = y1;
        this->R = R;
    }
    Circle(const Circle &C) {
        this->x1 = C.x1;
        this->y1 = C.y1;
        this->R = C.R;
    }
    Circle(Rectangle &R) {
        this->x1 = R.getxc();
        this->y1 = R.getyc();
        this->R = R.getSide();
    }
    ~Circle() {}
    void print() {
        cout << "((" << x1 << ";" << y1 << "), " << R << ")" << endl;
    }
    double getParam() {
        return 3.14 * R * R;
    }
    Circle operator = (const Circle &R) {
        return Circle(this->x1 = R.x1, this->y1 = R.y1, this->R = R.R);
    }
};

void main() {
    Line l;
    l.print();
    cout << endl;
    Line l1(0.1, 0.1, 0.1, 5.1);
    Line l2(0.1, 5.1, 5.1, 5.1);
    Line l3(5.1, 5.1, 5.1, 0.1);
    Line l4(5.1, 0.1, 0.1, 0.1);
    Line l5(0.1, 0.1, 5.1, 5.1);
    l = l1;
    l.print();
    cout << endl;
    cout << l5.getParam() << endl;
    Rectangle R;
    R.print();
    cout << endl;
    Rectangle R1(l1, l2, l3, l4);
    R = R1;
    R.print();
    cout << endl;
    cout << R1.getParam();
    cout << endl;
    Circle C;
    C.print();
    cout << endl;
    Circle C1(R);
    C = C1;
    C.print();
    cout << endl;
    cout << C.getParam();
    system("pause");
}