And then there is the speed issue

while (b)

{

if (b->type == CUBE)

surface += CubeSurface(b);

elseif (b->type == CYLINDER)

surface += CylinderSurface(b);

elseif (b->type == SPHERE)

surface += SphereSurface(b);

elseif (b->type == PYRAMID)

surface += PyramidSurface(b);

elseif (b->type == CONE)

surface += ConeSurface(b);

elseif (b->type == TORUS)

surface += TorusSurface(b);

elseif (b->type == TETRAHEDRON)

surface += TetrahedronSurface(b);

elseif (b->type == OCTAHEDRON)

surface += OctahedronSurface(b);

elseif (b->type == DODECAHEDRON)

surface += DodecahedronSurface(b);

elseif (b->type == ICOSAHEDRON)

surface += IcosahedronSurface(b);

elseif (b->type == ELLIPSOID)

surface += EllipsoidSurface(b);

elseif (b->type == PARABOLOID)

surface += ParaboloidSurface(b);

elseif (b->type == TTETRAHEDRON)

surface += TTetrahedronSurface(b);

elseif (b->type == TOCTAHEDRON)

surface += TOctahedronSurface(b);

elseif (b->type == TDODECAHEDRON)

surface += TDodecahedronSurface(b);

elseif (b->type == TICOSAHEDRON)

surface += TIcosahedronSurface(b);

elseif (b->type == TELLIPSOID)

surface += TEllipsoidSurface(b);

elseif (b->type == PARABOLOID)

surface += ParaboloidSurface(b);

b = bptr[i++];

}

return surface;

}

So for each volume calculation there is a lot of decision-making until we have the proper routine. Compare that to our simple recipe with pointers to a function.

With objects, most of the decisions about functions are made at the time the object is constructed.

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