february_13

#include<iostream>
#include<utility>
using namespace std;
class figure {
public:
    virtual double getPerimeter() = 0;
    virtual double getSquare() = 0;
    virtual void print() = 0;

};
class sqare :public figure {
private:
    double large;
public:
    sqare(const double& l) {
        large = l;
    }
    double getSquare() override {
        return large * large;
    }
    double getPerimeter() override {
        return large * 4;
    }
    void print() override{
        cout << "square\n";

    }

};
class treingular :public figure {
private:
    double large;
public:
    treingular(const double& temp) {
        large = temp;
    }
    double getSquare() override {
        return (1 / 2) * large * large;
    }
    double getPerimeter() override {
        return large * 3;

    }
    void print() override {
        cout << "treingular\n";
    }
};
class circle :public figure {
private:
    double radius;
public:
    circle(const double& r) {
        radius = r;
    }
    double getSquare() override {
        return radius * radius * 3.14;
    }
    double getPerimeter() override {
        return radius * 2 * 3.14;
    }
    void print() override {
        cout << "circle \n";

    }

};
int main() {
    circle c(10);
    c.print();
    cout << c.getSquare() << ' ' << c.getPerimeter() << ' \n';
    sqare s(10);
    s.print();
    cout << s.getSquare() << ' ' << c.getPerimeter() << '\n';
    treingular t(10);
    t.print();
    cout<< t.getSquare() << ' ' << t.getPerimeter() << '\n';


}