It is valid code or not

Question

is it valid code or not
T *p=0;
delete p;

Answer 1

delete null pointer is safe. Nothing will happen and nothing illegal. But here you shouldn't delete anything , because you didn't allocate the memory with new operator

Answer 2

its run but not give any output

Answer 3

thanks @sonam

Answer 4

it's valid but not official

Answer 5

try it and then check it