Compilare: user.cpp: In function ‘int main()’: user.cpp:55:32: warning: argument to ‘sizeof’ in ‘void* memcpy(void*, const void*, size_t)’ call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess] memcpy(P, Q, sizeof(P)); ^ user.cpp:56:32: warning: argument to ‘sizeof’ in ‘void* memset(void*, int, size_t)’ call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess] memset(Q, 0, sizeof(Q)); ^