【C语言】一维数组倒排

#include <stdio.h>
int main() {
    int arr[] = {1, 2, 3, 4, 5};
    int i;
    int len = sizeof(arr) / sizeof(arr[0]);
    int mid = len / 2;

    for (i = 0; i < mid; i++) {
        int tmp = arr[i];
        arr[i] = arr[4 - i];
        arr[4 - i] = tmp;

    }

    for (i = 0; i < len; i++)
        printf("%d/n", arr[i]);
    return 0;
}