Each Ethernet network card is characterized by a unique $48-$bit identifier, which is

called MAC address. Typically, the MAC address is represented in hex form. To find

the type of the address we check the value of the first octet at the left. If it is even,

the address type is unicast. If it is odd, the type is multicast. If all octets are $0$xFF$,$ the

type is broadcast. For example:

a$.$ The FF:FF:FF:FF:FF:FF address is broadcast.

b$.$ The $18$:$20$:$3$F:$20$:AB:$11$ address is unicast, because $18$ is even.

c$.$ The A$3$:$3$F:$40$:A$2$:C$3$:$42$ address is multicast, because A$3$ is odd.

Write a C$++$ program that reads a MAC address and displays its type. Assume that the

user enters the MAC address in x:x:x:x:x:x form, where each x is a hex number.