Do you know that? 41% of those who spent 20 or more hours per month prospecting earned $70+ per hour. next

Is NULL always defined as 0(zero)?

NULL is defined as either 0 or (void*)0. These values are almost identical; either a literal zero or a void pointer is converted automatically to any kind of pointer, as necessary, whenever a pointer is needed (although the
compiler can't always tell when a pointer is needed).