函数的2d数组应为int**数组作为参数

#include <iostream>

void sum2DArray(int** array, int rows, int cols) {
    int sum = 0;
    for (int i = 0; i < rows; ++i) {
        for (int j = 0; j < cols; ++j) {
            sum += array[i][j];
        }
    }
    std::cout << "Sum of all elements: " << sum << std::endl;
}

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
    int count = 1;
    for (int i = 0; i < rows; ++i) {
        for (int j = 0; j < cols; ++j) {
            array[i][j] = count++;
        }
    }

    // 调用函数
    sum2DArray(array, rows, cols);

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

    return 0;
}