Answer Posted / patrick

You cannot must have a pointer to a pointer if you want to
modify the pointer.

void reverse(node** head)
{
node* cur = *head;
*head = null;

while (cur)
{
node* next = cur->next;
cur->next = *head;
*head = cur;
cur = next;
}
}

Besides the head pointer, you will need two local pointers.

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