Toca filha da putaaaaaaaaaa

#include <stdio.h>
int check_item (int array[], int i )
{
    if (array[i] == -1)
        return 0;
    else
        return 1;
}
int main()
{
    int n = 6;
    int f = 0;
    int cont = 0;
    int array[6] =  {1,2,0,5,3,4};
    int i = 0;
    int aux_i = 0;
    int flag = 0;
    while (cont < n)
    {
        printf("i = %d\n",i);
        if (check_item(array, i) == 0)
        {
            f =+1;
            aux_i += 1;
            flag = 1;
        }
        else
        {
            if (flag == 0)
                aux_i = i;
            else
                i = aux_i;

            array[i] = -1;
            i = aux_i;
            flag = 0;
            cont +=1;
            i = array[aux_i];
        }
    }
    printf("Familias = %d\n",f);
}