#include <iostream>
#include <cmath>
using namespace std;
class Shape {
public:
virtual float calculate_Area() = 0;
virtual float calculate_Perimeter() = 0;
};
class Square : public Shape {
private:
float side;
public:
Square(float s) {
side = s;
}
float calculate_Area() {
return side * side;
}
float calculate_Perimeter() {
return 4 * side;
}
};
class Rectangle : public Shape {
private:
float length;
float width;
public:
Rectangle(float l, float w) {
length = l;
width = w;
}
float calculate_Area() {
return length * width;
}
float calculate_Perimeter() {
return 2 * (length + width);
}
};
class Triangle : public Shape {
private:
float a;
float b;
float c;
public:
Triangle(float x, float y, float z) {
a = x;
b = y;
c = z;
}
float calculate_Area() {
float s = (a + b + c) / 2;
return sqrt(s * (s - a) * (s - b) * (s - c));
}
float calculate_Perimeter() {
return a + b + c;
}
};
int main() {
Shape *s;
Square sq(4);
Rectangle rec(4, 6);
Triangle tri(3, 4, 5);
s = &sq;
cout << "Area of square: " << s->calculate_Area() << endl;
cout << "Perimeter of square: " << s->calculate_Perimeter() << endl;
s = &rec;
cout << "Area of rectangle: " << s->calculate_Area() << endl;
cout << "Perimeter of rectangle: " << s->calculate_Perimeter() << endl;
s = &tri;
cout << "Area of triangle: " << s->calculate_Area() << endl;
cout << "Perimeter of triangle: " << s->calculate_Perimeter() << endl;
return 0;
}
