Listing 4 Member function and static member data definitions for class shape

shape::shape(palette c) : _color(c) {}

shape::palette shape::color() const
       {
       return _color;
       }

double shape::area() const
       {
       return 0;
       }

const char *shape::name() const
       {
       return "point";
       }

ostream &shape::put(ostream &os) const
       {
       return os << color_image[_color] << ' ' << name();
       }

const char *shape::color_image[shape::RED - shape::BLUE + 1] =
       { "blue", "green", "red" };

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