Why are memory addresses are represented using hexadecimal numbers?

Question

Whenever I see C programs that refer directly to a specific location on the memory (e.g. a memory barrier) it is done with hexadecimal numbers, also in windows when you get

Answer 1

Its a much shorter way to represent what would otherwise be written in binary. It is also very nice and easy to convert hex to binary and back. Each 4 digits of binary corresponds to one digit of hex.