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Overloading binary operators Using a member function to overload a binary operator In contrast, let us overload binary minus with a member function:
class clock {
.....
clock operator-(clock c);
};
clock clock::operator-(clock c)
{
return (tot_secs - c.tot_secs);
}
Remember that there is an implicit first argument. This takes some getting used to. It would have been better to use a friend
function for binary minus, because of the symmetrical treatment of both arguments.
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