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The
return type of overloaded operators is also defined the
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same
as it is for overloaded functions.
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The
value returned from an overloaded operator is the
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residual
value of the expression containing that operator
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and
its operands.
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It
is extremely important that we pay close attention to the
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type
and value returned.
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It
is the returned value that allows an operator to be used
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within
a larger expression.
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It
allows the result of some operation to become the
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operand
for another operator.
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A
return type of void would render an operator useless
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when
used within an expression. (I suggest that we never
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have
an operator return void!)
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