Compilare: user.cpp: In function ‘int dfs(int)’: user.cpp:41:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:98:28: warning: variable ‘acc3’ set but not used [-Wunused-but-set-variable] int q1,q2,q3,acc1,acc2,acc3,ok1,ok2,ind3,ind1,ind2,er,e1,e2; ^ user.cpp:98:33: warning: unused variable ‘ok1’ [-Wunused-variable] int q1,q2,q3,acc1,acc2,acc3,ok1,ok2,ind3,ind1,ind2,er,e1,e2; ^ user.cpp:98:37: warning: unused variable ‘ok2’ [-Wunused-variable] int q1,q2,q3,acc1,acc2,acc3,ok1,ok2,ind3,ind1,ind2,er,e1,e2; ^ user.cpp:98:56: warning: unused variable ‘er’ [-Wunused-variable] int q1,q2,q3,acc1,acc2,acc3,ok1,ok2,ind3,ind1,ind2,er,e1,e2; ^ user.cpp:98:59: warning: unused variable ‘e1’ [-Wunused-variable] int q1,q2,q3,acc1,acc2,acc3,ok1,ok2,ind3,ind1,ind2,er,e1,e2; ^ user.cpp:98:62: warning: unused variable ‘e2’ [-Wunused-variable] int q1,q2,q3,acc1,acc2,acc3,ok1,ok2,ind3,ind1,ind2,er,e1,e2; ^