When an operator is overloaded, it takes on an additional meaning relative to a certain class.
But it can still retain all of its old meanings.
1) The operators >> and << may be used for I/O operations because in the header, they are
2) In a stack class it is possible to overload the + operator so that it appends the contents of
one stack to the contents of another. But the + operator still retains its original meaning
relative to other types of data.