Compilare: user.cpp: In function ‘void AIBUpdate(Node, int, int)’: user.cpp:91:10: warning: statement has no effect [-Wunused-value] for(x;x<=limit;x=x+((x&(x-1))^x)) ^ user.cpp: In function ‘int AIBQuery(Node, int)’: user.cpp:96:10: warning: statement has no effect [-Wunused-value] for(x;x>0;x=x-((x&(x-1))^x)) ^ user.cpp: In function ‘void read(int&)’: user.cpp:24:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,DIM,stdin); ^ user.cpp:32:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,DIM,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:133:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mess.in","r",stdin); ^ user.cpp:134:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mess.out","w",stdout); ^ user.cpp:136:27: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,DIM,stdin); ^ user.cpp: In function ‘int BinarySearch(Node, int, int)’: user.cpp:74:35: warning: ‘answer’ may be used uninitialized in this function [-Wmaybe-uninitialized] int left=1,right=limit,middle,answer; ^