Compilare: user.cpp: In member function ‘int aib::query(int, int)’: user.cpp:29:25: warning: unused variable ‘i’ [-Wunused-variable] int log = logn, i, left = 0, sum = 0; ^ user.cpp: In member function ‘int aib::bsq(int)’: user.cpp:45:25: warning: unused variable ‘i’ [-Wunused-variable] int log = logn, i, left = 0, sum = 0; ^ user.cpp: In member function ‘int aib::query(int, int)’: user.cpp:41:5: warning: control reaches end of non-void function [-Wreturn-type] } ^