Compilare: user.cpp: In function ‘int main()’: user.cpp:23:32: 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] std::memset (dp, 0, sizeof (dp)); ^ user.cpp:24:32: 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] std::memset (cl, 0, sizeof (cl)); ^ user.cpp:25:32: 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] std::memset (v, 0, sizeof (v)); ^