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)){ ^ user.cpp:22:14: warning: ‘sum’ may be used uninitialized in this function [-Wmaybe-uninitialized] sum-=AIB[a]; ^ user.cpp: In function ‘int find(int)’: user.cpp:36:9: warning: ‘mid’ may be used uninitialized in this function [-Wmaybe-uninitialized] return mid; ^ user.cpp:34:30: warning: ‘sum’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(val == a) f = l+1; else if (val > a)l = mid; else f = mid+1; ^ user.cpp: In function ‘int main()’: user.cpp:22:14: warning: ‘sum’ may be used uninitialized in this function [-Wmaybe-uninitialized] sum-=AIB[a]; ^ user.cpp:16:6: note: ‘sum’ was declared here int sum; ^