A regular polygon is an n-sided polygon in which all sides are of the same length and all angles have the same degree(i. e the polygon is both equilateral and equiangular). The formula for computing the area of a re polygon is n * s2(s squar)
area =
4 * tan(pi/n)
write a function that return the area of a regular polygon using the following header.
double area(int n, double side.
write a main function that prompts the user to enter the number of sides and the side of a regular polygon, and display the area.
The program needs to allow the user to run the calculations as needed until the user chooses to end the program.

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