So what? you may say… I can do the same thing in C!

#include "body.h"

float totalVolume (struct *bptr[])

{

int i = 0;

float volume = 0.;

struct body *b;

*b = bptr[i++];

while (b)

{

if (b->type == CUBE)

volume += CubeVolume(b);

elseif (b->type == CYLINDER)

volume += CylinderVolume(b);

b = bptr[i++];

}

return volume;

}

#include "body.h"

float totalSurface (struct *bptr[])

{

int i = 0;

float surface = 0.;

struct body *b;

*b = bptr[i++];

while (b)

{

if (b->type == CUBE)

volume += CubeSurface(b);

elseif (b->type == CYLINDER)

volume += CylinderSurface(b);

b = bptr[i++];

}

return surface;

}

All right, that would work. But what if you get a new type of body, say, a Cone?

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