#include <iostream>

int * create_array()
{ int result[100];
  for (int i = 0; i < 100; i += 1)
    result[i] = i+1;
  return result; }

void main()
{ int * ptr = create_array();
  int sum = 0;
  cout << "calculating...\n";    // REMOVE THIS
  for (int i = 0; i<100; i+=1)
    sum += ptr[i];
  cout << " 1+2+...+100 = " << sum << "\n"; }

/* This program is wrong. The sum should be 5050, but what we see
   is a more-or-less random number. If the cout << "calculating"
   is removed, it mysteriously seems to work, but it is still a
   wrong program */