Reverse an Array Using Only Pointers

#include <stdio.h>

void reverse_array(int *ptr, int n) {
    int *end = (ptr +(n - 1)); 
    int temp;

    while(ptr < end){
        temp = *ptr;
        *ptr = *end;
        *end = temp;

    ptr++;
    end--;
    }
}

int main() {
    int n;
    scanf("%d", &n);

    int arr[100];
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    reverse_array(arr, n);

    for (int *p = arr; p < (arr + n); p++) {
        printf("%d", *p);
        if(p < ((arr + n) - 1)){
            printf(" ");
        }
    }

    return 0;
}