Write a program whose inputs are the length and width of the rectangle and whose output is the area of the rectangle.

Ex: If the input is:

$124$

The output is:

The area of a rectangle of length $12$ and width $4$ is $48$ unit squares.

The program must define a structure Rectangle with length, width, and area objects. Also, define and call a function that calculates the area

and returns a structure.

Rectangle RecArea $($int length, int width$)$