Compilare: user.cpp: In function ‘void mult2(short int*, short int*, short int*)’: user.cpp:35:24: 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(v, 0, sizeof(v)); ^