Compilare: user.cpp: In function ‘void add(int, int)’: user.cpp:10:9: warning: statement has no effect [-Wunused-value] for(pos; pos<=N;pos+=zeros(pos) ){ ^ user.cpp: In function ‘int query(int, int)’: user.cpp:17:7: warning: statement has no effect [-Wunused-value] for(b; b > 0;b -= zeros(b)){ ^ user.cpp:21:7: warning: statement has no effect [-Wunused-value] for(a; a > 0;a -= zeros(a)){ ^