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

int main()
{
	bool b {true};		//or false

	cout << b << "\n";
	cout << boolalpha << b << noboolalpha << "\n";
	cout << "A bool occupies " << sizeof (bool) << " byte(s).\n\n";

	return EXIT_SUCCESS;
}