% my_area calculates the area of a circle, given the radius.

% Programmer: Dick Furnstahl  furnstahl.1@osu.edu
%
% Revision history:
%   20-Mar-2005 -- original version for Physics 263
%

% get the radius from the user using "input"
radius = input('Enter the radius of a circle: ');

% calculate the area (the ";" at the end suppresses the output)
area = pi * radius^2;

% output the result with the "disp" function (for "display")
disp('The area is: ')
disp(area)