Reverse an Array

#include <stdio.h>
int main() {
    int arr[] = {1,2,3,4,5}, n = 5;
    for (int i = 0, j = n-1; i < j; i++, j--) {
        int t = arr[i]; arr[i] = arr[j]; arr[j] = t;
    }
    for (int i = 0; i < n; i++) printf("%d ", arr[i]);
    return 0;
}