float stringToFloat (string s)
{
	for (unsigned int i = 0; i < s.length (); i++)
		if (!isdigit (s[i]) && (s[i] != '.') && (s[i] != ',') && (s[i] != '+') && (s[i] != '-'))
			throw BadInput ((std::string ("Cannot convert character: ") + s[i] + " in " + s).c_str ());
	stringstream fss;
	fss << s;
	float f;
	fss >> f;

		return f;
}

string floatToString (float f)
{
	std::ostringstream buf;
	buf.precision (2);
	buf << fixed << f;

	return buf.str ();
}