[AngelicaDeAlquezar]

@bobjenkins: "Barça" no es una palabra en español, sino en catalán. La c-cedilla ("ç") no existe en español.

Not every "modification" to a letter is considered an "acento", and as David said, there are only five cases of written accents in Spanish: á, é, í, ó, ú.
They obey strict rules to mark the tonic syllable when it's needed.