Compilare: user.cpp: In function ‘int main()’: user.cpp:84:52: warning: operation on ‘K’ may be undefined [-Wsequence-point] while(i==q[K].x) q[K].res = Query(q[K++].y); ^ user.cpp:67:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,x,y,K,M; ^ user.cpp:67:13: warning: unused variable ‘x’ [-Wunused-variable] int i,j,x,y,K,M; ^ user.cpp:67:15: warning: unused variable ‘y’ [-Wunused-variable] int i,j,x,y,K,M; ^ user.cpp: In function ‘void Read(int&)’: user.cpp:35:49: 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:39:53: 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 ‘int main()’: user.cpp:64:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("distincte.in","r",stdin); ^ user.cpp:65:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("distincte.out","w",stdout); ^ user.cpp:69:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&N,&K,&M); ^