Two Events Seen From Two Frames of Reference

%% Two Events Seen From Two Frames of Reference
% Determines the time difference between two events in a second inertial
% system

% Constants
c = 3.00*10^8;                  % [m/s] Speed of Light

% Inputs and Variables
x1 = input('Distance 1\n');
x2 = input('Distance 2\n');

% Outputs and Equations
t = sqrt(x2^2-x1^2)/c;
fprintf('The time difference: %.3f s\n',t)