如何在C/C++中最好地处理动态多维数组？

#include<iostream>
#include<vector>

int main() {
    int rows = 3;
    int cols = 4;

    // 动态分配内存
    int **array = new int*[rows];
    for (int i = 0; i< rows; ++i) {
        array[i] = new int[cols];
    }

    // 初始化数组
    for (int i = 0; i< rows; ++i) {
        for (int j = 0; j< cols; ++j) {
            array[i][j] = i * cols + j;
        }
    }

    // 输出数组
    for (int i = 0; i< rows; ++i) {
        for (int j = 0; j< cols; ++j) {
            std::cout<< array[i][j] << " ";
        }
        std::cout<< std::endl;
    }

    // 释放内存
    for (int i = 0; i< rows; ++i) {
        delete[] array[i];
    }
    delete[] array;

    return 0;
}

#include<iostream>
#include<vector>

int main() {
    int rows = 3;
    int cols = 4;

    // 使用 std::vector 创建动态多维数组
    std::vector<std::vector<int>> array(rows, std::vector<int>(cols));

    // 初始化数组
    for (int i = 0; i< rows; ++i) {
        for (int j = 0; j< cols; ++j) {
            array[i][j] = i * cols + j;
        }
    }

    // 输出数组
    for (int i = 0; i< rows; ++i) {
        for (int j = 0; j< cols; ++j) {
            std::cout<< array[i][j] << " ";
        }
        std::cout<< std::endl;
    }

    return 0;
}