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Another
operator that is interesting to discuss is the (),
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function
call operator.
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This
operator is the only operator we can overload with as
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many
arguments as we want. We are not limited to 1, 2, 3,
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etc.
In fact, the function call operator may be overloaded
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several
times within the same scope with a different
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number
(and/or type) of arguments.
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It is
useful for accessing elements from a multi-
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dimensional
array: matrix (row, col) where the []
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operator
cannot help out as it takes 2 operands always,
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never
3!
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