Introduction - If you have any usage issues, please Google them yourself
The procedure, carried out integer addition operations of arbitrary length, using two-way linked list to achieve a long integer cycle storage, each node containing an integer variable, each node in the left of the decimal number 4, that is, not the more than 9999 non-negative integer, the whole list is expressed as million hexadecimal number, use the first node of the symbol data field on behalf of a long integer symbols, the sum of the process does not destroy the two operand list.