请问第13题到底应该怎么做

Question

这里面的第13题的答案怎么写有会的可以帮我一下忙吗这里非常感谢了3个小题都要用指针写

Answer 1

没有10.7的程序，12->>rain.c?是写的什么

#13
#include <stdio.h>
#define ROWS 3
#define COLS 5

void enter_numbers(double arr[][COLS], int rows);
void calculate_average(double arr[][COLS], int rows);
double calculate_total_average(double arr[][COLS], int rows);
double max_value(double arr[][COLS], int rows);

int main(void)
{
    double numbers[ROWS][COLS];
    enter_numbers(numbers, ROWS);
    calculate_average(numbers, ROWS);
    double total_average = calculate_total_average(numbers, ROWS);
    double max = max_value(numbers, ROWS);

    printf("The maximum value is: %.2f\n", max);
    printf("The total average is: %.2f\n", total_average);

    return 0;
}

void enter_numbers(double arr[][COLS], int rows)
{
    for (int i = 0; i < rows; i++)
    {
        printf("Enter 5 numbers for row %d: ", i + 1);
        for (int j = 0; j < COLS; j++)
        {
            scanf("%lf", &arr[i][j]);
        }
    }
}

void calculate_average(double arr[][COLS], int rows)
{
    for (int i = 0; i < rows; i++)
    {
        double sum = 0.0;
        for (int j = 0; j < COLS; j++)
        {
            sum += arr[i][j];
        }
        double average = sum / COLS;
        printf("The average for row %d is: %.2f\n", i + 1, average);
    }
}

double calculate_total_average(double arr[][COLS], int rows)
{
    double total_sum = 0.0;
    for (int i = 0; i < rows; i++)
    {
        for (int j = 0; j < COLS; j++)
        {
            total_sum += arr[i][j];
        }
    }
    double total_average = total_sum / (ROWS * COLS);
    return total_average;
}

double max_value(double arr[][COLS], int rows)
{
    double max = arr[0][0];
    for (int i = 0; i < rows; i++)
    {
        for (int j = 0; j < COLS; j++)
        {
            if (arr[i][j] > max)
            {
                max = arr[i][j];
            }
        }
    }
    return max;
}

14.
#include <stdio.h>

void enter_numbers(int rows, int cols, double arr[rows][cols]);
void calculate_average(int rows, int cols, double arr[rows][cols]);
double calculate_total_average(int rows, int cols, double arr[rows][cols]);
double max_value(int rows, int cols, double arr[rows][cols]);

int main(void)
{
    int rows = 3;
    int cols = 5;
    double numbers[rows][cols];
    enter_numbers(rows, cols, numbers);
    calculate_average(rows, cols, numbers);
    double total_average = calculate_total_average(rows, cols, numbers);
    double max = max_value(rows, cols, numbers);

    printf("The maximum value is: %.2f\n", max);
    printf("The total average is: %.2f\n", total_average);

    return 0;
}

void enter_numbers(int rows, int cols, double arr[rows][cols])
{
    for (int i = 0; i < rows; i++)
    {
        printf("Enter 5 numbers for row %d: ", i + 1);
        for (int j = 0; j < cols; j++)
        {
            scanf("%lf", &arr[i][j]);
        }
    }
}

void calculate_average(int rows, int cols, double arr[rows][cols])
{
    for (int i = 0; i < rows; i++)
    {
        double sum = 0.0;
        for (int j = 0; j < cols; j++)
        {
            sum += arr[i][j];
        }
        double average = sum / cols;
        printf("The average for row %d is: %.2f\n", i + 1, average);
    }
}

double calculate_total_average(int rows, int cols, double arr[rows][cols])
{
    double total_sum = 0.0;
    for (int i = 0; i < rows; i++)
    {
        for (int j = 0; j < cols; j++)
        {
            total_sum += arr[i][j];
        }
    }
    double total_average = total_sum / (rows * cols);
    return total_average;
}

double max_value(int rows, int cols, double arr[rows][cols])
{
    double max = arr[0][0];
    for (int i = 0; i < rows; i++)
    {
        for (int j = 0; j < cols; j++)
        {
            if (arr[i][j] > max)
            {
                max = arr[i][j];
            }
        }
    }
    return max;
}