Taking care of the Color

As it happens (because we took a ready-made, thoroughly designed class), the Color class already supports the assignment (=) operator. This makes it easy to take care of the Color in the “operator=“ member function:

// the assignment operator

cube& cube::operator= (const cube& c)

{

if ( this == &c) return (*this) ;

length = c.length;

*color = *c.color;

return (*this);

}

Beware: *color = *c.color is different from color = c.color !

Here we invoke the operator=

member function function of the Color object. (We make an actual copy of the object).

here we just copy the pointer, something we don’t want.

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