MATLAB: Warning: Control Character ‘\Q’ is not valid. fprintf

cell arrayfprintftxt

Hi there,
I searched all over and this seems to be an undocumented problem. At least not heavily documented.
I am trying to modify a txt file by reading it into a cell array with fgetl and then make changes to the relevant lines and finally write a txt file with the changes using fprintf. I get the warning in the subject and these lines are not written. these lines are paths.
What am I doing wrong? or what would be the right way to escape the problem? the files are attached. no need to run further than line 31 in main.m. The functions after that are not needed for my question.
Thanks a bunch, Asher

Best Answer

You can print out a \Q if it's in a string. That's not the problem at all. The problem is that you don't have a format specifier string in your fprintf() statement. To fix, put '%s\n' in your fprintf().
fprintf(fid,'%s\n', A{1,i});
You don't need the second fprintf with just the backslash n because I combined it all into this single call to fprintf().
Related Question