Compilare: user.cpp: In function ‘void atr(int*, long long int*)’: user.cpp:150:19: warning: argument to ‘sizeof’ in ‘void* memcpy(void*, const void*, size_t)’ call is the same expression as the source; did you mean to dereference it? [-Wsizeof-pointer-memaccess] memcpy(A,B,sizeof(B)); ^ user.cpp: In function ‘int check()’: user.cpp:147:1: warning: control reaches end of non-void function [-Wreturn-type] } ^