Suppose that you have a cycle of singly-linked structures defined via the following C++ data type: struct cyc_item_t 1 string data; cyc_item_t *next; 1; Complete the following function so that it reverses the cycle pointed to by its argument. The example in the picture has only four items, but you should ensure that your function works for any number of items. void reverse_cycle (cyc_item_t. sstart)