C++顺序表删除操作错误

#include <iostream>
using namespace std;

const int MAX_SIZE = 100;

struct SeqList {
    int data[MAX_SIZE];
    int length;
};

void Display(SeqList &list) {
    for (int i = 0; i < list.length; i++) {
        cout << list.data[i] << " ";
    }
    cout << endl;
}

void DeleteElement(SeqList &list, int index) {
    if (index < 0 || index >= list.length) {
        cout << "Invalid index!" << endl;
        return;
    }

    for (int i = index; i < list.length; i++) {
        list.data[i] = list.data[i + 1];
    }

    list.length--;
}

int main() {
    SeqList list;
    list.data[0] = 1;
    list.data[1] = 2;
    list.data[2] = 3;
    list.length = 3;

    cout << "Before deletion: ";
    Display(list);

    DeleteElement(list, 1);

    cout << "After deletion: ";
    Display(list);

    return 0;
}