/*  While20.c  (c) 1997 Kari Laitinen

    http://www.naturalprogramming.com

    1997-??-??  File created.
    2013-11-19  Last modification.
*/

#include  <stdio.h>

int main()
{
   int  number_to_print  =  0 ;

   printf( "\nNumbers from 0 to 20 are the following:\n\n" ) ;

   while ( number_to_print  <= 20 )
   {
      printf( " %d",  number_to_print )  ;
      number_to_print  ++  ;
   }
}