Overloaded Area Methods

Method overloading means two methods can share a name if their parameter lists differ. Write TWO methods both named area:
- area(int side) returns the area of a square (side times side)
- area(int width, int height) returns the area of a rectangle (width times height)

The program calls both. For area(5) it prints 25, and for area(4, 6) it prints 24.