Reverse an Array Using Only Pointers

#include <stdio.h>

void reverse_array(int *ptr, int n) {
    //Loop until half of array
    //Put left element into temp
    //Put right element into left
    //Put temp element into right
    int temp=0;
    for(int i=0;i<n/2;i++){
        temp = *(ptr+i);
        *(ptr+i) = *(ptr+n-i-1);
        *(ptr+n-i-1) = temp;
    }
}

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;
}