A file “potfilenames.dat” stores potential file names, one per line. The names do not have any extension. Write a script that will print the names of the valid files, once the extension “.dat” has been added

Ch9Ex10.m

fid = fopen('potfilenames.dat');

if fid == -1

 disp('File not opened')

else

 count = 0;

 while ~feof(fid)

 aname = fgetl(fid);

 aname = strcat(aname,'.dat');

 tryit = fopen(aname);

 if tryit ~= -1

 count = count + 1;

 fprintf('%s is a valid file\n', aname)

 fc = fclose(tryit); % Assume this works

 end

 end

 closeres = fclose(fid); % Assume this works

 fprintf('\nThere were %d valid file names\n', count)

end