public class FigurMain {
    public static void main(String args[]) {
        Figur[] figurer = new Figur[4];

        figurer[0] = new Rektangel(
                                   10,   // x
                                   10,   // y
                                   10,   // sida
                                   10 ); // hojd

        figurer[1] = new Cirkel(
                                10,   // x
                                10,   // y
                                10 ); // radie

        figurer[2] = new Rektangel(
                                   20,   // x
                                   20,   // y
                                   20,   // sida
                                   20 ); // hojd

        figurer[3] = new Cirkel(
                                20,   // x
                                20,   // y
                                20 ); // radie

        for (int index = 0; index < figurer.length; index++) {
            if (figurer[index] instanceof Cirkel) {
                System.out.println("Cirkel:");
                System.out.println("  Diameter: " +
                                   ((Cirkel)figurer[index]).diameter() );
            }
            else {
                System.out.println("Rektangel:");
            } // if

            System.out.println("  Högsta x: " + figurer[index].max_x());
            System.out.println("  Högsta y: " + figurer[index].max_y());
            System.out.println("  Area: " + figurer[index].area() );
            System.out.println("  Omkrets: " + figurer[index].omkrets());
        } // for
    } // main
} // class FigurMain