#include <iostream>
#include <cmath>
using namespace std;

int main1() {
	cout << "Hello, world..." << endl << "...and goodbye!";
	// int 1abc;
	cout << 1 << ',' << 2.3 << "hello" << endl;
	cout << 2 + 3 << endl;
	// тук ще изведем 2 плюс 3
	/* коментар
	 на няколко
	 реда
	 */
	cout << "2 + 3" << endl;

	double area;
	double radius;
	cout << "Моля, въведете радиуса: ";
	cin >> radius;

	area = 3.14 * radius * radius;
	// !!! area = "лице";
	cout << "Л	cout << r << endl;ицето е " << area << endl;

	int a = 5, b, c = 3;
	cout << a << ' ' << b << ' ' << c << endl;

	cout << "Hello,\nworld!\tGoodbye!\n";
	cout << "Hi!\tGoodbye!\n";

	// !!! d = 5;
	int d = 10;
	cout << d << endl;
	d = 15;
	// !!! int d = 15;
	cout << d << endl;
	d = 20;
	cout << d << endl;

	// !!! cin >> 3;
	// cout << 3 << (char)10 << 3;
	cout << 3 << 10 << 3 << endl;

	const double PI = 3.14;
	//!!! PI = 3.15;
	// !!! cin >> PI;

	bool p = true;
	bool q = false;

	bool r = p && !q;
	cout << r << endl;
	r = ((r && p) || q) && !(p || q);

	cout << r << endl;

	char ch = 'd';
	ch = 65;
	cout << ch << endl;
	ch = -10;
	cout << ch << endl;

	cout << sizeof(a) << endl;

	short int x = 25;
	x = 40000; // !!!
	cout << x << endl;

	unsigned long u = 5;
	u = -10; // !!!
	cout << u << endl;

	x = -a;
	cout << a << ' ' << x << endl;


	return 0;
}

int main2() {
	int a, b;
	cout << "a = ";
	cin >> a;
	cout << "b = ";
	cin >> b;
	cout << a << " = " << a/b << '.' << b
		 << " +" << a%b << endl;

	bool p = a <= b;
	// bool q = a = b;
	bool q = a != b;
	cout << p << ' ' << q << endl;
	cout << a << ' ' << b << endl;

	cout << 1234567.8 << ' ' << 0.000001234567 << endl;

	float f1 = 1.23456789;
	float f2 = 1.234567891234;

	double d1 = 1.23456789;
	double d2 = 1.234567891234;

	float zero = 1e-1000;

	cout << (f1 == f2) << endl;
	cout << (d1 == d2) << endl;

	cout << (zero == 0.0) << endl;

	float f = 1.8;
	f = f - 0.3;
	f = f - 0.3;
	f = f - 0.3;
	f = f - 0.3;
	f = f - 0.3;
	f = f - 0.3;

	const float EPS = 1E-6;

	cout << (f == 0) << endl;
	cout << f << endl;

	cout << (fabs(f) < EPS) << endl;

	f = 1.8;
	cout << f / 6 << endl;
	cout << 7 / 2.0 << endl;

	cout << (2 < 3 && 4 < 5) << endl;

	return 0;
}

int main() {
	bool b = false;
	char c = 'A';
	short s = 1080;
	int i = 100000;
	float f = 1.3;
	double d = 5.78;

	// OK
	/*
	c = b;
	s = c;
	i = s;
	f = i;
	d = f;
	*/

	b = c; // загуба! всичко !=0 -> 1
	cout << b << endl;
	c = s; // загуба! взема се %256
	cout << c << endl;
	s = i; // загуба! взема се %32768
	i = f; // загуба! взема се цяла част
	cout << i << endl;
	f = d; // загуба на точност!

	cout << 5 / (double)3 << endl;
}