if(head == NULL){
    return NULL;
}


struct node* newList = (struct node*) malloc(sizeof(struct node));
if(newList == NULL){
    return NULL;
}

struct node * newTemp = newList;
struct node * newTempNext;
struct node * temp = head;

memcpy(newTemp,temp,sizeof(struct node));

int i = 1;
while(temp != NULL){
    if(i%2 == 0){
        newTempNext = (struct node*) malloc(sizeof(struct node));
        if(newTempNext == NULL){
            free(newList);
            return NULL;
        }
        memcpy(newTempNext,temp,sizeof(struct node));
        newTemp->next = newTempNext;
        newTemp = newTempNext;
        if((temp->next)->next == NULL){
            newTemp->next = NULL;
            return newList;
        }
    }
    i++;
    temp = temp -> next;
}
return newList;