C语言对数组的各种操作

#include<stdio.h>#include<stdlib.h>//初始化数组void init(int arr[], int length){ int i = 0; printf("初始化数组->:n "); for (i = 0; i<length; i++) {  scanf_s("%d", &arr[i]); }}//数组反向输出void reverse(int arr[], int length){ int i = 0; printf("逆置数组->:n"); for (i = length - 1; i >= 0; i--)//数组下标是从0开始的 {  printf("%d ", arr[i]); }}//清空数组（即数组中元素全部为零）void empty(int arr[], int length){ int i = 0; printf("清空数组->:n"); for (i = 0; i<length; i++) {  arr[i] = 0;  printf("%d ", arr[i]); }}int main(){ int arr[10]; int i = 0; int length = 0; length = sizeof(arr) / sizeof(arr[0]); //函数的调用 init(arr, length); reverse(arr, length); printf("n"); empty(arr, length); system("pause"); return 0;}