How to swap adjacent element of a single linked list?

Question

How to delete the node that given as argument in single linked list?
Is there any system call to get prev pointer ?

Note: Here the goal is to delete the address not the node's value

Answer 1

You can use any standard swap function and pass the *(node->data) and *(node->next->data) something like -

void SwapDataWithNext(struct Node *node)
{
       /* Swap data of node with its next node's data */
        swap(&node->data, &node->next->data);
}

void swap(int *a, int *b)
{
    int temp;
    temp = *a;
    *a = *b;
    *b = temp;
}