workcpp_3_1

#include <iostream>

class ShapeAreaCalculator {
public:
    static double calculateTriangleAreaBySides(double a, double b, double c) {
        double p = (a + b + c) / 2.0;
        return std::sqrt(p * (p - a) * (p - b) * (p - c));
    }

    static double calculateTriangleAreaByBaseAndHeight(double base, double height) {
        return 0.5 * base * height;
    }

    static double calculateRectangleArea(double width, double height) {
        return width * height;
    }

    static double calculateSquareArea(double sideLength) {
        return sideLength * sideLength;
    }

    static double calculateRhombusArea(double diagonal1, double diagonal2) {
        return 0.5 * diagonal1 * diagonal2;
    }

    static int getCount() {
        return count;
    }

private:
    static int count;
};


int main() {
    int ShapeAreaCalculator::count = 0;
    // Подсчет площади треугольника по сторонам
    double triangleArea = ShapeAreaCalculator::calculateTriangleAreaBySides(3.0, 4.0, 5.0);
    std::cout << "The area of the triangle is: " << triangleArea << std::endl;

    // Подсчет площади прямоугольника
    double rectangleArea = ShapeAreaCalculator::calculateRectangleArea(5.0, 7.0);
    std::cout << "The area of the rectangle is: " << rectangleArea << std::endl;

    // Подсчет площади квадрата
    double squareArea = ShapeAreaCalculator::calculateSquareArea(6.0);
    std::cout << "The area of the square is: " << squareArea << std::endl;

    // Подсчет площади ромба
    double rhombusArea = ShapeAreaCalculator::calculateRhombusArea(8.0, 10.0);
    std::cout << "The area of the rhombus is: " << rhombusArea << std::endl;

    // Вывод количества выполненных расчетов площадей
    std::cout << "The number of area calculations is: " << ShapeAreaCalculator::getCount() << std::endl;

    return 0;
}