#include <iostream>
#include <sstream>
 
int main()
{
	for (auto s : { "3 4 -", "3 4" } )
	{
	     std::istringstream stream(s);
         stream.exceptions( std::ios::failbit | std::ios::badbit );
	     int n;
	     try
	     {
	         while (stream) { stream >> n; std::cout << "n " << n << '\n'; }
	     }
	     catch (...)
	     {
		     std::cout << "caught, fail " << stream.fail()
		               << ", eof " << stream.eof()
		               << ", bad " << stream.bad() << "\n";
	     }
	}
}

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