Skip data files while reading input and writing output in matlab code

I use matlab code to read several files and write output in the following way:

n=202;
for idx = 0:n

      infilename = sprintf('pt%d.txt',idx);
      outname = sprintf('out%d.txt',idx);

Now if some arbitrary data files are missing e.g. pt20.txt, pt50.txt ,etc then the code is terminated. I would like to modify the code in a way that if some data files are not found then the code would skip them and proceed to reading/writing the next available data file.

Thank you.

Answer 1

[Azzi Abdelmalek]

infilename = sprintf('pt%d.txt',idx);
if exist(infilename)
  %do
end

[Sabbir]

Thank you for your reply. But I guess, it would be

if exist

not if exit? Then if I do so, then the code is terminated once it encounters the missing data file. So, if for example, the 8th data file is missing then it writes outputs before encountering the missing data file and them terminates.

[Azzi Abdelmalek]

yes, it was just a typo