#include <iostream.h>
#define MAX 10

main()
{
  int a[MAX], i;

  for (i = 0; i < MAX; i++)
    a[i] = 2 * i + 1;
  cout << "Subscript? (-ve value to quit) ";
  cin >> i;
  while (i >= 0) {
    if (i >= MAX)
      cout << "Subscript out of range!"
           << endl;
    else
      cout << "a[" << i << "]: "
           << a[i] << endl;
    cout << "Subscript? (-ve value to quit) ";
    cin >> i;
  }
  return 0;
}