#include <iostream>
#include <sstream>
#include <string>

int main()
{
    std::istringstream iss("2.832 1.3067 nana1.678 x-1E2 xxx.05 meh.ugh");
    double num = 0;
    for (; iss; )
    	if (iss >> num)
    	    std::cout << num << '\n';
    	else if (!iss.eof())
    	{
    		iss.clear();
            iss.ignore(1);
    	}
}