c语音数组问题，求知欲，希望告知

Question

Answer 1

#include<stdio.h>
#define N 5
int main(){
    int a[N], i, temp;
    printf("请输入一个数组：");
    for (i = 0; i < N; i++) {
        scanf_s("%d",&a[i]);
    }
    printf("正序存放的数组：");
    for (i = 0; i < N; i++) {
        printf("%d ",a[i]);
    }
    for (i = 0; i < N / 2; i++) {
        temp = a[i];
        a[i] = a[N - 1 - i];
        a[N - 1 - i] = temp;
    }
    printf("\n");
    printf("逆序存放的数组：");
    for (i = 0; i < N; i++) {
        printf("%d ",a[i]);
    }
    return 0;
}