Question

function box1( l, m)
%UNTITLED Summary of this function goes here
%   Detailed explanation goes here

%Define parameter 

M1=[l, m];


fin=fopen('d://box1.txt','wt');

fprintf(fin,'      XY                   %g:     %g \n',M1);

Answer 1

Are l and m column vectors that you want to iterate through? In that case you could write:

for k=1:size(M1,1)
fprintf(fin,'      XY                   %g:     %g \n',M1(k,:);
end
fclose(fid);

It’d be better if you clarified that though.