public class Iffy
{
    // it takes a command-line argument
    // converts to a integer
    //  if the integer is < 0 it iwll say You entered a
    //  negative integer.
    public static void main(String[] args)
    {
        int entered = Integer.parseInt(args[0]);
        if(entered < 0)
        {
            System.out.println("You entered a negative number");
        }
        else if(entered == 0)
        {
            System.out.println("Zip City!");
        }
        else
        {
            System.out.println("You entered a positive number");
        }

    }
}