Reverse an Array Using Only Pointers

#include <stdio.h>
void swap(int &a, int &b){
    int temp = a;
    a = b;
    b = temp;
}
void reverse_array(int *ptr, int n) {
    // Your logic here
    for(int i = 0; i < n / 2; i++){
        swap(*(ptr + i), *(ptr - i + n - 1));
    }
}

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 i = 0; i < n; i++) {
        printf("%d", arr[i]);
        if(i < n-1){
            printf(" ");
        }
    }

    return 0;
}