/* This program is free software; you can redistribute it and/or modify it under  
 * the terms of the GNU General Public License as published by the Free Software  
 * Foundation; either version 2 of the License, or (at your option) any later     
 * version.                                                                       
 *                                                                                  
 * This program is distributed in the hope that it will be useful, but WITHOUT    
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS  
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 
 * 
 * The following code calculates and displays the list of prime numbers.
 *
 */

{
  int n, i, j, b;

  n=100;
  for (i=2; i<n; i++) {
    b=1;
    for (j=2; j<i; j++) {
      if (i%j==0) {
        b=0;
        break;
      }
    } 
    if (b==1)
      writeint i;
  }
}