Saving files uniquely when I process a sequence of files

I have found how to run a sequence of files, but if each file has a result how can I save that result uniquely for each file so it is not overwritten by the next file?

Answer 1

[Sean de Wolski]

Give it a numerical extension (id)

Simple example:

for ii = 1:10
  filename = ['Friday_' num2str(ii) '.txt'] 
end