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#include<iostream>
#include <cmath>
using namespace std;
const double PI = 3.1415;
struct Point
{
int x;
int y;
Point(int x, int y)
{
this->x = x;
this->y = y;
}
Point()
{
x = y = 0;
}
double getDistTo(const Point& other) const
{
return sqrt((x - other.x)*(x - other.x) + (y - other.y)*(y - other.y));
}
};
class Figure
{
Point* points;
int pointsCount;
void CopyFrom(const Figure& other);
void Free();
public:
Figure(int pointsCount);
Figure(const Figure& other);
Figure& operator=(const Figure& other);
~Figure();
void setPoint(int ind, int x, int y);
const Point& getPoint(int ind);
virtual double getPer() = 0;
virtual double getArea()= 0;
};
void Figure::CopyFrom(const Figure& other)
{
points = new Point[other.pointsCount];
for (int i = 0; i < other.pointsCount; i++)
points[i] = other.points[i];
pointsCount = other.pointsCount;
}
void Figure::Free()
{
delete[] points;
pointsCount = 0;
}
Figure::Figure(const Figure& other)
{
CopyFrom(other);
}
Figure& Figure::operator=(const Figure& other)
{
if (this != &other)
{
Free();
CopyFrom(other);
}
return *this;
}
Figure::~Figure()
{
Free();
}
Figure::Figure(int pointsCount)
{
points = new Point[pointsCount];
this->pointsCount = pointsCount;
}
void Figure::setPoint(int ind, int x, int y)
{
if (ind < 0 || ind >= pointsCount)
return;
points[ind].x = x;
points[ind].y = y;
}
const Point& Figure::getPoint(int ind)
{
if (ind < 0 || ind >= pointsCount)
throw "Invalid index";
return points[ind];
}
int main()
{
Figure** arr= new Figure*[3];
arr[0] = new Triangle(15, 15, 15, 30, 50, 30);
arr[1] = new Rectangle(15, 15, 50, 30);
arr[2] = new Circle(1, 2, 9);
for (int i = 0; i < 3; i++)
{
cout << arr[i]->getPer()<<endl;
cout << arr[i]->getArea()<<endl;
}
}
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