#include <iostream>

class Rectangle {
	int width, height;
public:
	void count_area(int, int);
	int area()
	{
		return width*height;
	}
};

void Rectangle::count_area(int x, int y)
{
	width = x;
	height = y;
}

int main() {
	Rectangle rect;
	rect.count_area(5, 3);
	std::cout << rect.area() << std::endl;

	system("pause");
}