将动态分配的二维数组当作实参输入函数的C语言代码

以下是将动态分配的二维数组当作实参输入函数的C语言代码：

#include <stdio.h>
#include <stdlib.h>

void input(int **arr, int rows, int cols) {
    int i, j;
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            scanf("%d", &arr[i][j]);
        }
    }
}

int main() {
    int rows, cols, i, j;
    printf("Enter the number of rows and columns: ");
    scanf("%d %d", &rows, &cols);

    // allocate memory for the 2D array
    int **arr = (int **)malloc(rows * sizeof(int *));
    for (i = 0; i < rows; i++) {
        arr[i] = (int *)malloc(cols * sizeof(int));
    }

    // input values into the array
    printf("Enter the elements of the array:\n");
    input(arr, rows, cols);

    // print the array
    printf("The array is:\n");
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            printf("%d ", arr[i][j]);
        }
        printf("\n");
    }

    // free the memory allocated for the array
    for (i = 0; i < rows; i++) {
        free(arr[i]);
    }
    free(arr);

    return 0;
}