Reverse an Array Using Only Pointers

#include <stdio.h>

void reverse_array(int *ptr, int n) 
{
    int *ptr_var=&ptr[0];
    int temp,size;
    if(n%2==0)
    {
        size=n/2;
    }
    else
    {
        size=n/2+1;
    }
    for(int i=0;i<size;i++)
    {
        temp=ptr[n-i-1];
        ptr[n-i-1]=ptr[i];
        ptr[i]=temp;
    }
    // Your logic here
}

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;
}