I made a rough algorithm from given program.

1. Take inputs from user.
2. Do calculations.
3. Print the result.

I suggest you to add do...while loop as follows =>

1. do
{

I assume that you know how to traverse a linked list.
just strat from 0th node and go to the node which containg negative number.
make next node of this current node(which containg negative...

it is not postfix / prefix in 'c' language i.e. it is not ++a (pre increment 'a') or b-- (post decrement 'b')

it a postfix/prefix which referes to conversion of human readable mathematical...