#include<stdio.h>
#include<limits.h>
#define SIZE 1000000

void print_array(int a[], int);

void main() {
  int A[SIZE];
  int pos;
  // print_array(A, SIZE);
  pos = linsearch(A, SIZE, 17);
  if (pos > -1)
    printf("17 occurs at position %d\n", pos);
  else 
    printf("17 does not occur\n");
}

int linsearch(int a[], int size, int val) {
  int i;
  for (i = 0; i < size; i++)
    if (a[i] == val)
      return i;
  return -1;
}

void print_array(int a[], int len) {
  int i;
  for (i = 0; i < len; i++)
    printf("%d ", a[i]);
  printf("\n");
}