Thread: how to pack 8 x 4 bit binary numbers into a long int?

How do I pack 8 4-bit binary numbers into a long int?
The program is to take an input string of 8 ascii charcaters, (digits 0 to 9 only), convert them to their 4 bit binary equivilants and pack them into a long int.

eg:
input string: 13560927

= 0001 0011 0101 0110 0000 1001 0010 0111.


thanks...