写一个链表MakeEmpty()

Sure, here is the implementation for the MakeEmpty() function for a singly linked list in C++:

void MakeEmpty(ListNode* head) {
ListNode* current = head->next;
ListNode* next;
head->next = nullptr;
while (current != nullptr) {
next = current->next;
delete current;
current = next;
}
}

This function deallocates all the nodes in the linked list and sets the head pointer to nullptr to indicate an empty list.