/*************************************************************
   File:     nee.c
   Status:   15-mrt-2002, pfk.
   Functie:  Voorbeeld van neveneffect.
 *************************************************************/

#include <stdio.h>

int i;         /* globale variabele */

/*-----------------------------------------------------------*
 * Functie om globale variabele te veranderen.
 *-----------------------------------------------------------*/
void regelneef ()
{
  i -= 1;
}

/*************************************************************
 * Hoofdprogramma.
 *************************************************************/
int main ()
{
  i = 1;

  while (i < 3)
  {
    i += 1;
    regelneef ();
    printf ("Waarde i = %d\n", i);
  }

  return (0);
}