c - 函数 C 不会打印

Question

我的程序不会打印出 setAverage 和largestNum 变量的任何值。我的编译器没有出现任何错误。我在这里缺少什么？

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

void arrayNumbers(float set_numbers[ROWS][COLS], int, int, float, float);
void inputData(float set_numbers[ROWS][COLS], int, int);

int main(){
  // 2D array of 15 numbers declaration and variables declared
  float set_numbers[ROWS][COLS], largestNum, setAverage;
  //counter variables for the loop
  int column, row;
  inputData(set_numbers, row, column);
  arrayNumbers(set_numbers, row, column, setAverage, largestNum);
      printf("\n");
      printf("\tThe total average of the set: %.1f\n", setAverage);
      printf("\tThe largest number in the array is: %.1f\n\n", largestNum);
  return 0;
  }

void inputData(float set_numbers[ROWS][COLS], int row, int column){
      printf("\tYou're given an array which is a 3-by-5 array.\n");
      printf("\tYou're going to put in each of the total 15 values.\n");
      printf("\t///////////////////////////////////////////////////\n");
  for(row = 0; row < ROWS; row++){
    for(column = 0; column < COLS; column++){
      printf("\tAdd data to position [%d]:[%d]", row + 1, column + 1);
      scanf("%f", &set_numbers[row][column]);
    }
  }
      printf("\n\tYour entered values are: \n\n");
  for(row = 0; row < ROWS; row++){
    for(column = 0; column < COLS; column++){
      printf("\t%.1f\t", set_numbers[row][column]);
    }
      printf("\n");
  }
}

void arrayNumbers(float set_numbers[ROWS][COLS], int row, int column,
                  float setAverage, float largestNum){
      printf("\t/////////////////////////////////////////////////////////");
      printf("//////////\n");
      printf("\n\tThe average of your 3-by-5 sets of numbers are: \n\n");
  float total, sum;
  for(row = 0; row < ROWS; row++){
    for(column = 0; column < COLS; column++){
      sum = 0;
      sum = sum + set_numbers[row][column];
      total = total + set_numbers[row][column];
      setAverage = total / (COLS * ROWS);

      if(largestNum < set_numbers[row][column]){
          largestNum = set_numbers[row][column];
          }
        }
        printf("\n\tAverage of row [%d]: %.1f\t", row + 1, sum/COLS);
    }
  }

我似乎找不到我错过了 af 值或进行了错误计算的地方。在为我的工程类(class)提交程序之前，这是我需要的最后一件事。我检查了其他一些stacoverflows，但没有出现任何有用的结果。

Answer 1

在函数arrayNumbers(set_numbers, row, columns, setAverage,largestNum);setAverage 和largestNum 通过值( https://www.geeksforgeeks.org/passing-by-pointer-vs-passing-by-reference-in-c/ ) 传递。所以这些值不会更新。

在 arrayNumbers 函数中，sum 被放置在 2 个循环内。所以它只是该行的最后一个值。