交换二维数组中的列c++

#include <iostream>

void swapColumns(int arr[][3], int col1, int col2, int rows) {
    for (int i = 0; i < rows; i++) {
        int temp = arr[i][col1];
        arr[i][col1] = arr[i][col2];
        arr[i][col2] = temp;
    }
}

int main() {
    int arr[3][3] = {{1, 2, 3},
                     {4, 5, 6},
                     {7, 8, 9}};

    int col1 = 0; // 第一列的索引
    int col2 = 2; // 第三列的索引

    swapColumns(arr, col1, col2, 3);

    // 打印交换后的二维数组
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            std::cout << arr[i][j] << " ";
        }
        std::cout << std::endl;
    }

    return 0;
}