Written :
About thr pattern do not follow Old paper pattern.Paper had 5 sections-
Sec I   English(very easy, 4-5 vocab, grammar, sentence completion, RC)
Sec II   Aptitude(10 ques on Venn diagram, 2 on probab,5 on  mulplication and Division)
Sec III  Mental Ability(very simple, try to score 10/10,
 eg - 1234.5678   1234.5678  1234567.445    u need to tell all three are similar, none are similar, 2 r similar,   1 Q(5 sub ques) on conditions given and u need to select candidates on various criteria )No practice required for this.
Sec IV   C ques(do pointers(not in too depth),malloc,calloc,structures,for,ifloops very well)
Sec V   C++(virtual const and destr, templates, access specifiers, OOPS conceps, virtual functions)
GD : They do not look how relevant u speak they only look u can shout or not so plz speak if u want to clear this round.
HR Interview: Its very simple if u satisfy eligibility criteria and know something about ACCENTURE u will clr it.
Technical + Final Interview :They ask everything regarding ur project and some technical(C,C++) and HR question. If u r in final round this means u r almost in.

ACCENTURE in every stage looks how much ur confident in communication. If ur a good communicator then ur sure to clr the Intr rounds.