C Progrma to reverse array using pointer

Simple C program to reverse using pointer:

/* C program to reverse array using pointer */
#include<stdio.h>
int main()
{
 int i,j,*ptr;
 int arr[]={12,43,11,87,34,87,32};
 int n=sizeof(arr)/sizeof(arr[0]);
 printf("Array is: \n");
 /* You can print array using arr[i] */
 for(i=0;i<n;i++)
 {
  printf("%d ",*(arr+i));
 }
 ptr=arr;
 i=0;
 j=n-1;
 while(i<j)
 {
  int temp=*(ptr+i);
  *(ptr+i)=*(arr+j);
  *(arr+j)=temp;
  i++;j--;
 }
 printf("\nReverse array is :\n");
 /* Can print array using arr[i] or *(ptr+i) */
 for(i=0;i<n;i++)
 {
  printf("%d ",*(arr+i));
 }
 return 0;
}