#include <iostream>
#include <sstream>

int main()
{
	double d;
	std::string s("0.735");
	std::istringstream is(s);
	is >> d;
	
	std::cout << d << '\n' << is.str() << '\n'
		<< is.str().empty() << '\n' << is.eof() << '\n';
	
	return 0;
}