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From: CyberFrog on 21 Jun 2010 12:34
Doug Schwarz <see(a)sig.for.address.edu> wrote in message <fhMTn.83673$HG1.64233(a)newsfe21.iad>...
> CyberFrog wrote:
> > Hi all,
> >
> > I have a simple fprintf code as follows:
> >
> > fido = fopen(myfile, 'a');
> > fprintf(fido,['Name: ',mystring,'\n']);
> >
> > where mystring is: 'dogs' and this seems t print ok. However if
> > mystring is longer i.e. I have tried to use a pathname instead,
> >
> > mystring='C:/all/this/way/to/get/home/sweet/home'
> >
> > I get a warning:
> >
> > Warning: Invalid escape sequence appears in format string. See help
> > sprintf for valid escape sequences.
> > Does anyone know what this means?
>
> If you really used forward slashes then this should be fine, but if you
> actually used backslashes (like are normally used on Windows) then you
> have constructed a format string containing things like '\w' and that is
> an invalid escape sequence. Obviously, your example is not what you
> really used so I can't be more specific. The problem is not the length
> of mystring.
>
> The way to avoid the problem is
>
> fprintf(fido,'Name: %s\n',mystring);
>
> --
> Doug Schwarz
> dmschwarz&ieee,org
> Make obvious changes to get real email address.


Many thanks all, in fact the first reply got my mystring to pass through successfully!

Thanks again for your invaluable input
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