如何将这个C程序转换成一个计算每一行的总和及其总和的函数？

#include <stdio.h>

void calculateRowSum(int matrix[][3], int* rowSum, int* totalSum) {
    for (int i = 0; i < 3; i++) {
        int sum = 0;
        for (int j = 0; j < 3; j++) {
            sum += matrix[i][j];
        }
        rowSum[i] = sum;
        *totalSum += sum;
    }
}

int main() {
    int matrix[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
    int rowSum[3] = {0};
    int totalSum = 0;

    calculateRowSum(matrix, rowSum, &totalSum);

    for (int i = 0; i < 3; i++) {
        printf("Row %d sum: %d\n", i+1, rowSum[i]);
    }
    printf("Total sum: %d\n", totalSum);

    return 0;
}