How MATLAB Reads an M File?

I have the two following functions in a MATLAB M File. Am I right that when you run an M File in Matlab, MATLAB ALWAYS executes the first function (here myfun), and does't run others unless I execute them (e.g., typeing and entering myfun2)?

How Can I tell MATLAB to read the second function in the M File first?

function myfun
 b =  1
end

function myfun2
    if exist('b')
         disp('exists');
    elseif ~exist('b')
        disp('does not');
    end
end

Answer 1

[John D'Errico]

NO. MATLAB does not "read" any function, as you seem to be thinking.

The secondary functions (beyond that main one) are accessible only when called by the main function. While (if you know what you are doing) you can extract function handles to allow you to use those secondary functions, why bother?

Just save the other functions in their own distinct m-files. Now you can use them in any order you wish.