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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. struct list {
  5.     int key;
  6.     struct list *next;
  7. };
  8.  
  9. void append(struct list **l1, struct list l2)
  10. {
  11.     *l1 = malloc(sizeof *l1);
  12.     **l1 = l2;
  13.     (*l1)->next = NULL;
  14. }
  15.  
  16. int main(void)
  17. {
  18.     struct list *l1, l2 = { 42, NULL }, l3 = { 24, NULL };
  19.  
  20.     append(&l1, l2);
  21.     append(&l1->next, l3);
  22.  
  23.     for (struct list *p = l1; p != NULL; p = p->next)
  24.         printf("%d\n", p->key);
  25.  
  26.     free(l1->next);
  27.     free(l1);
  28. }
  29.  
Success #stdin #stdout 0.01s 1852KB
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stdin
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Standard input is empty
stdout
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42
24
https://ideone.com/g6CPp
language:
C99 (gcc 8.3)
created:
14 years ago
visibility:
public

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