Hi, I would like to know if GNU Octave can export
the solutions of my program, and what form is it?
what sort of data is contained in your 'solutions'? Octave is a coding/scripting language with a number of options for saving data and writing output files, largely limited just by your ability to code an acceptable output format. If you can provide a bit more information about what you would like your output to look like, we may be able to point you in the right direction.
I recommend you start with the section of the Octave Help documentation on inputs/outputs, mainly useful for saving variables and reading/creating arbitrary text files:
the io package can also provide some other data formats, including spreadsheets: