#include <stdio.h>

/* Find pointer to si in array between fp and tp. Return NULL if not found */
int* find_in_array_2(int si, int *fp, int *tp){
  if (fp > tp)
    return NULL;
  else if (*fp == si)
    return fp; 
  else 
    return find_in_array_2(si, fp+1, tp);
}
     

int main(void) {
  int tab[] = {4, 8, -9, 2, 9, 11, 19};
  int done = 0, i;
  int *result;

  while (!done){
    printf("Search for: "); scanf(" %d", &i);

    result = find_in_array_2(i, &tab[0], &tab[0] + 6); 
    if (result) printf("Found\n"); else printf("NOT found\n");
    done = i == 0;
  }
   
  return 0;
}