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

void health(const istream& is);

int main()
{
	health(cin);
	cin.setstate(ios_base::failbit);
	health(cin);
	return EXIT_SUCCESS;
}

void health(const istream& is)
{
	const ios_base::iostate state = is.rdstate();

	cout
		<< "eof returns " << is.eof() << ", eofbit is "
		<< static_cast<bool>(state & ios_base::eofbit) << "\n"

		<< "bad returns " << is.bad() << ", badbit is "
		<< static_cast<bool>(state & ios_base::badbit) << "\n"

		<< "fail returns " << is.fail() << ", failbit is "
		<< static_cast<bool>(state & ios_base::failbit) << "\n"

		<< "good returns " << is.good() << "\n"
		<< "operator void * returns " << is.operator void *() << "\n"
		<< "operator! returns " << is.operator!() << "\n\n";
}