C语言， for（）函数合并

Question

见图，如何把三个相同用法的 for（）函数合并成用一个 for（）函数来表示？

Answer 1

#include<stdio.h>
#define SIZE 5
#define PRA 72

int main(void) {
  int score[SIZE];
  int index;
  int sum = 0;
  float average;

  printf("输入%d个数: ", SIZE);
  for (index = 0; index < SIZE; index++) {
    scanf("%d", &score[index]);
    sum += score[index];
    printf("%d ", score[index]);
  }
  
  printf("\n这%d个数的总和是:%d", SIZE, sum);
  average = sum / (float)SIZE;
  printf("\n平均值是:%f", average);
  printf("\n差点是:%f", average - PRA);

  return 0;
}