Problem with format rational

I think this question is more direct, specific and right to the issue than the previous one.

The point is that I have a great script with several calls to several mini-scripts inside it. Each mini-script makes some calculations and operations.

Okay, so there is a moment in the second mini-script in which I need to use

format rational

to make some calculations, and then, I like to return to the default format by matlab (which, according to what I have read in Matlab forum, is format short) so the code could return me values with decimals. So, to do so, I write

format short

But the issue is that the following results and calculations that Matlab will give me, they are all of them in format rational, it doesn't give me results in format shor anymore.

It seems I cannot use format rational once and then get rid of it. It seems that once I use format rational, it stays forever in the code. How can ressolve that? What an I doing wrong? I even tried writing just

format

instead of format short, but still doesn`t work.

I only want to use format rational in a scpecific part of that mini-script and then go back using format short (the default one) for the rest of the code.

Thank you!

[John D'Errico]

Please. This is NOT a new question. Your problem is that your variables are symbolic. rational format has NOTHING to do with symbolic expressions.