Delete Given Node in a Linked List

PROBLEM :

Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.

Supposed the linked list is 1 -> 2 -> 3 -> 4 and you are given the third node with value 3, the linked list should become 1 -> 2 -> 4 after calling your function.
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SIMPLE c++ IMPLEMENTATION :
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/**
 * Definition for singly-linked list.
 * struct ListNode {
 *     int val;
 *     struct ListNode *next;
 * };
 */
void deleteNode(struct ListNode* node) {
   
    if(node==NULL)
        return ;
   
    struct ListNode *temp ;
    temp=node->next ;
   
    node->val=temp->val ;
    node->next=temp->next ;
   
    free(temp) ;
}

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