Removing Duplicate elements in an Array

#include <stdio.h>
void operation(int *array, int length)
{
    int count =0, i, *current , *end = array + length - 1;

    for ( current = array + 1; array < end; array++, current = array + 1 )
    {
        while ( current <= end )
        {
            if(*current == *array)
                *current = *end--;
            else
                current++;
        }
        count++;
    }
    array -= count;
    printf("The array without dublicates is \n");
    while(array <= end)
    {
        printf("%d\t",*array);
        array++;
    }
}
int main()
{
    int a[100],b[100],l,i;
    printf("Enter the array's limit: ");
    scanf("%d",&l);
    printf("Now enter %d elements.\n",l);
    for(i=0; i<l; i++)
        scanf("%d",&a[i]);
    operation(a,l);
}
//Output
//Enter the array's limit: 5
//Now enter 5 elements.
//1
//2
//1
//2
//8
//The array without duplicates is
//1       2       8