链表在开始c++时打印0值

struct ListNode {
    int val;
    ListNode* next;
};

ListNode* head = new ListNode();
head->val = 0;
head->next = nullptr;

ListNode* current = head;
while (current != nullptr) {
    cout << current->val << " ";
    current = current->next;
}

#include <iostream>
using namespace std;

struct ListNode {
    int val;
    ListNode* next;
};

int main() {
    ListNode* head = new ListNode();
    head->val = 0;
    head->next = nullptr;

    ListNode* current = head;
    while (current != nullptr) {
        cout << current->val << " ";
        current = current->next;
    }

    return 0;
}