funcio de resta desde terminal
suma del projecte
producto proiecto
Revert "producto proiecto 	"

This reverts commit 7a492a947618d60c8f45b9e4e68ee4445a1cbe1b.
Revert "Revert "producto proiecto 	""

This reverts commit d38bba5bd5a6aa3e6d2644423b4fd5da4757c9a8.
sad
Merge branch 'master' of https://github.com/prubiella/practica.git