This command gets an unsigned long long
integer from the specified packet. Typically unsigned long long integers
are 8 bytes in size and range from 0 to 18446744073709551615.
The data will be taken starting at the cursor position and the cursor will be moved forward by the size of the data returned.
long long int Packet: This is the packet that the command should use.
Data from the specified packet if no
error occurred.
0 if an error occurred.
C++