Compilare: user.cpp: In function ‘void Citeste(int&)’: user.cpp:17:49: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++poz==DIM) fread(buff,1,DIM,stdin),poz=0; ^ user.cpp:21:53: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++poz==DIM) fread(buff,1,DIM,stdin),poz=0; ^ user.cpp: In function ‘void Read()’: user.cpp:78:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&M); ^ user.cpp: In function ‘int Query(int, int, int, int, int)’: user.cpp:72:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:132:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eliminare.in","r",stdin); ^ user.cpp:133:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eliminare.out","w",stdout); ^ user.cpp: In function ‘void Solve()’: user.cpp:60:10: warning: ‘f’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(st==x && dr==y) return aint[p]; ^ user.cpp:93:25: note: ‘f’ was declared here int i,t,st,dr,mid,q,f; ^