交换函数不交换c++中的二维数组元素

#include <iostream>

void swapElements(int arr[][3], int row1, int col1, int row2, int col2) {
    int temp = arr[row1][col1];
    arr[row1][col1] = arr[row2][col2];
    arr[row2][col2] = temp;
}

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

    std::cout << "Before swapping:" << std::endl;
    for (int i = 0; i < 2; i++) {
        for (int j = 0; j < 3; j++) {
            std::cout << arr[i][j] << " ";
        }
        std::cout << std::endl;
    }

    swapElements(arr, 0, 0, 1, 2);

    std::cout << "After swapping:" << std::endl;
    for (int i = 0; i < 2; i++) {
        for (int j = 0; j < 3; j++) {
            std::cout << arr[i][j] << " ";
        }
        std::cout << std::endl;
    }

    return 0;
}

Before swapping:
1 2 3
4 5 6
After swapping:
6 2 3
4 5 1