C++将std::array与只有一个变量的std::array进行比较

#include <array>
#include <iostream>

int main() {
    std::array<int, 1> arr1 = {42};
    std::array<int, 3> arr2 = {1, 2, 3};

    // 比较arr1和arr2的大小
    if (arr1.size() == arr2.size()) {
        std::cout << "arr1 and arr2 have the same size." << std::endl;
    } else {
        std::cout << "arr1 and arr2 have different sizes." << std::endl;
    }

    // 比较arr1和arr2的元素是否相等
    if (arr1 == arr2) {
        std::cout << "arr1 and arr2 are equal." << std::endl;
    } else {
        std::cout << "arr1 and arr2 are not equal." << std::endl;
    }

    // 比较arr1和arr2的字典序关系
    if (arr1 < arr2) {
        std::cout << "arr1 is less than arr2." << std::endl;
    } else if (arr1 > arr2) {
        std::cout << "arr1 is greater than arr2." << std::endl;
    } else {
        std::cout << "arr1 and arr2 are equal." << std::endl;
    }

    return 0;
}