Design and implement a class whose objects represent polynomials. The
Polynomial an x n + an–1x n–1 + . . . + a0
will be implemented as a linked list. Each node will contain an int value
for the power of x and an int value for the corresponding coefficient. The
class operations should include addition, subtraction, multiplication, and
evaluation of a polynomial. Overload the operators +, − , and * for
addition, subtraction, and multiplication.
Evaluation of a polynomial is implemented as a member function with
one argument of type int. The evaluation member function returns the
value obtained by plugging in its argument for x and performing the
indicated operations. Include four constructors: a default constructor, a
copy constructor, a constructor with a single argument of type int that
produces the polynomial that has only one constant term that is equal to the
constructor argument, and a constructor with two arguments of type int
that produces the one-term polynomial whose coefficient and exponent are
given by the two arguments. (In the above notation, the polynomial
produced by the one-argument constructor is of the simple form consisting
of only a0. The polynomial produced by the two-argument constructor is of
the slightly more complicated form anx n.) Include a suitable destructor.
Include member functions to input and output polynomials.
When the user inputs a polynomial, the user types in the following:
anx ^n + an–1x ^n–1 + . . . + a0
However, if a coefficient ai is zero, the user may omit the term aix^i. For
example, the polynomial
3x4 + 7x2 + 5
can be input as
3x^4 + 7x^2 + 5
It could also be input as
3x^4 + 0x^3 + 7x^2 + 0x^1 + 5
If a coefficient is negative, a minus sign is used in place of a plus sign, as
in the following examples:
3x^5 – 7x^3 + 2x^1 – 8
–7x^4 + 5x^2 + 9
A minus sign at the front of the polynomial, as in the second of the two
examples, applies only to the first coefficient; it does not negate the entire
polynomial. Polynomials are output in the same format. In the case of
output, the terms with zero coefficients are not output.
To simplify input, you can assume that polynomials are always entered
one per line and that there will always be a constant term a0. If there is no
constant term, the user enters zero for the constant term, as in the
following:
12x^8 + 3x^2 + 0
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