#include <stdio.h>
#include <math.h>

enum PaperThings
{
	Book,
	Magasine,
	NewsPaper,
	MetodichkaPoEVM,
	NoteBook
};

struct Rectangle
{
	double x0, y0, x1, y1, x2, y2, x3, y3;
};

double getArea(struct Rectangle myRectangle) {
	return (sqrt(pow((myRectangle.x1 - myRectangle.x0), 2) +
		pow((myRectangle.y1 - myRectangle.y0),2))*sqrt(pow((myRectangle.x3 - myRectangle.x1), 2) +
		pow((myRectangle.y3 - myRectangle.y1), 2)));
}

struct state_bits
{

	unsigned int reproduction : 1;
	unsigned int pause : 1;
	unsigned int record : 1;
};

typedef union MP3Player {
	struct state_bits bits;
	unsigned int state;
};

int main() {
	enum PaperThings a = NewsPaper;
	printf("%d\n", a);
	struct Rectangle square1 = { 0.0, 3.0, 4.0, 3.0, 0.0, 0.0, 4.0, 0.0 };
	printf("%f\n", getArea(square1));
	union MP3Player my_mp3;
	scanf_s("%hx", &my_mp3.state);
	if (my_mp3.bits.reproduction == 1) {
		printf("mp3 is reproducting\n");
	}
	else {
		printf("mp3 is not reproducting\n");
	}
	if (my_mp3.bits.pause == 1) {
		printf("mp3 is on pause\n");
	}
	else {
		printf("mp3 is out of pause\n");
	}
	if (my_mp3.bits.record == 1) {
		printf("mp3 is recording\n");
	}
	else {
		printf("mp3 is not recording\n");
	}
	int g;
	scanf_s("%i\n", &g);
	return 0;
}