Compilare: user.cpp: In function ‘void update(int, int)’: user.cpp:7:27: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for(; poz<=n; poz+=poz&(poz-1)^poz) ^ user.cpp: In function ‘void decrease(int, int)’: user.cpp:14:27: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for(; poz<=n; poz+=poz&(poz-1)^poz) ^ user.cpp: In function ‘int query(int, int)’: user.cpp:22:27: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for(; day2; day2-=day2&(day2-1)^day2) ^ user.cpp:24:34: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for(day1-=1; day1; day1-=day1&(day1-1)^day1) ^ user.cpp: In function ‘int main()’: user.cpp:30:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("datorii.in","r",stdin); ^ user.cpp:31:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("datorii.out","w",stdout); ^ user.cpp:33:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:36:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&sum); ^ user.cpp:41:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&operation); ^ user.cpp:45:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&day1,&sum); ^ user.cpp:49:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&day1,&day2); ^