50. Reverse an Array Using Only Pointers

#include <stdio.h>
void reverse_array(int *ptr, int n) 
{
    int *start=ptr;
    int *end=ptr;
    for(int i=0,j=n-1;i<j;i++,j--)
    {
        *(start+i)^=*(end+j)^=*(start+i)^=*(end+j);
    }
}

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;
}