% This program will performs Euler's method, given a differential equation
% saved in a file called diff_eq.m.  Set up diff_eq.m just as you would if 
% you were using MatLab's ode45 command.  We call euler.m just as we would
% call ode45.

% Inputs:
%
% file_name  -  This is a string that contains the name of the M-File that 
%               holds the differential equation we want to evaluate.
% tvalues  -  A vector of the form [tstart tfinish] that contains our starting
%             and stopping times.
% y0  -  Our initial condition, y0 = y(tstart).
% N  -  The number of iterations we would like to perform

% Outputs:
%
% t  -  The vector of time values that was used.
% y  -  The  vector of y values that contains the solution.

function [t y]=euler(file_name,tvalues,y0,N)

% You setup your initial conditions here.

for i=2:N+1 % Use i as our index, it goes from 2 to N+1
	temp_string=[file_name,'(t(i-1),y(i-1))']; % Setup the string that contains the function call we want to evaluate.
	f=eval(temp_string); % Evaluate the function call.

	% Finish Euler's Method here.

end