#include <stdio.h>
int required_arr[256];
int *remove_duplicate (int *old_arr,int n_old,int *new_arr,int *n_new)
{
	int counter=0;
	for (int i=0;i<n_old;i++)
	{
		for (int j=i+1;j<n_old-1;j++)
		{
			if (old_arr[i]==old_arr[j])
			{
				int temp=old_arr[i];
				old_arr[i]=old_arr[n_old-1-i];
				old_arr[n_old-1-i]=temp;
				counter++;
			}
		}
	}
	for (int i=0;i<(n_old-counter);i++)
	{
		new_arr[i]=old_arr[i];
		n_new++;
	}
	return required_arr;
}
int main ()
{
	const int arr_size=20;
	int arr[arr_size];
	int *arr_ptr;
	int new_size=0;
	printf ("Enter the array: ");
	fflush (stdout);
	for (int i=0;i<arr_size;i++)
		scanf ("%d",&arr[i]);
	arr_ptr= remove_duplicate (arr,arr_size,required_arr,&new_size);
	printf ("The new array is: ");
	for (int i=0;i<new_size;i++)
		printf ("%d",arr_ptr[i]);
	printf ("\n");
	printf ("The new array size is: %d",new_size);
	return 0;
}