memory.c (Appendix 2)


 1      #define _GNU_SOURCE
 2	#include <stdio.h>
 3	#include <stdlib.h>
 4	#include <string.h>
 5
 6	struct Occurrence {
 7	  char *word;
 8	  int wordno;
 9	};
10
11
12
13	struct List {
14	  struct Occurrence *occ;
15	  struct List *next;
16	};
17
18	void printList (struct List *mylist) {
19
20	  /* print the list */
21	  while (mylist) {
22	    printf ("The next word is %s\n", mylist->occ->word);
23	    mylist = mylist->next;
24	  }
25	}
26
27	int main () {
28  
29	  struct List *mylist, *tmp;
30
31	  char *line = NULL;
32	  int i;
33	  char *pos, *nextpos; 
34	  struct Occurrence *occ;
35	  int len;
36
37
38	  while (getline (&line, &len, stdin) != -1) {
39	  /* next line read */
40	  mylist = NULL;
41	  pos = line;
42	  i = 1;
43	  while ((nextpos = strstr (pos, " ")) != NULL ) {
44	    /* next word found */
45	    occ->wordno  = i;
46	    occ->word = strncpy (occ->word, pos, nextpos - pos);
47	    occ->word[nextpos - pos] = '\0';
48      
49	    /* add element into list */
50	    tmp->occ = occ;
51	    tmp->next = mylist;
52	    mylist = tmp;
53
54	    pos = nextpos + 1;
55	  }
56	  printList (mylist);
57	}
58	exit (0);
59    }