private static string ReadIntegerPart(InputReader input)
{
var token = "";
token += input.TakeIf('-', '+');
token += input.TakeWhile(char.IsDigit);
return(token);
}
private static string ReadFractionalPart(InputReader input)
{
var token = "";
if (input.NextIs('.'))
{
token += input.TakeIf('.');
token += input.TakeWhile(char.IsDigit);
}
return(token);
}