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  1. //Arquivo circDuplList.c
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4.  
  5. typedef struct cdLst{
  6. 	int info;
  7. 	struct cdLst* ant;
  8. 	struct cdLst* prox;
  9. } cdLst;
  10.  
  11. /*Insert a node to the front of the circular list*/
  12. cdLst* insert_front(cdLst* cdl, int info) {
  13. 	cdLst* p = (cdLst*)malloc(sizeof(cdLst));
  14. 	p->info = info;
  15. 	if (cdl != NULL) {
  16. 	    p->prox = cdl;
  17. 	    p->ant = cdl->ant;
  18. 	    p->ant->prox = p;
  19. 	    p->prox->ant = p;
  20. 	} else {
  21. 		p->prox = p;
  22. 		p->ant = p;
  23. 	}
  24. 	cdl = p;
  25. 	return p;
  26. }
  27.  
  28. /*Print the list*/
  29. void cdl_print(cdLst* cdl) {
  30.     printf("\n%d",cdl->info);
  31.     for (cdLst *p = cdl->prox; p != cdl; p = p->prox) {
  32.         printf("\n%d",p->info);
  33.     }
  34. }
  35.  
  36. int main(void){
  37.     cdLst* l = NULL;
  38.     l = insert_front(l,3);
  39.     l = insert_front(l,2);
  40.     l = insert_front(l,3);
  41.     l = insert_front(l,8);
  42.     l = insert_front(l,65);
  43.     l = insert_front(l,3);
  44.     cdl_print(l);
  45. }
Success #stdin #stdout 0s 9424KB
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Standard input is empty
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3
65
8
3
2
3
https://ideone.com/Rh6Mag
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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