#include <string.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>

const char string[] = "words separated by spaces -- and, punctuation!";
const char delimiters[] = " .,;:!-";
char *token, *cp;

main()
{
char *ptr;

cp = strdupa (string);                /* Make writable copy.  */
token = strtok_r (cp, delimiters,&ptr);      /* token => "words" */
printf("token = %s\n",token);
token = strtok_r (NULL, delimiters,&ptr);    /* token => "separated" */
printf("token = %s\n",token);
token = strtok_r (NULL, delimiters,&ptr);    /* token => "by" */
printf("token = %s\n",token);
token = strtok_r (NULL, delimiters,&ptr);    /* token => "spaces" */
printf("token = %s\n",token);
token = strtok_r (NULL, delimiters,&ptr);    /* token => "and" */
printf("token = %s\n",token);
token = strtok_r (NULL, delimiters,&ptr);    /* token => "punctuation" */
printf("token = %s\n",token);
token = strtok_r (NULL, delimiters,&ptr);    /* token => NULL */
printf("token = %s\n",token);
}