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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. typedef struct node_s {
  5.   int v;
  6.   struct node_s *prox;
  7. } node;
  8.  
  9. typedef struct lista_s {
  10.   node *primeiro;
  11. } lista;
  12.  
  13. void init_lista(lista *lt) {
  14.   lt->primeiro = NULL;
  15. }
  16.  
  17. void adiciona (int v, lista *lt){
  18.   node *novo = malloc(sizeof(node));
  19.   novo->v = v;
  20.   novo->prox = lt->primeiro;
  21.   lt->primeiro = novo;
  22.  
  23. }
  24.  
  25. node *ultimo (lista *lt)
  26. {
  27.  
  28.   if(lt->primeiro==NULL)
  29.   {
  30.     return NULL;
  31.   }
  32.   else
  33.   {
  34.     node *interm = lt->primeiro; 
  35.  
  36.     while(interm->prox!=NULL)
  37.     {
  38.       interm = interm ->prox;
  39.     }
  40.     return interm;
  41.   }
  42. }
  43.  
  44. int main(void) {
  45.   lista lt;
  46.   init_lista(&lt);
  47.   int n=0;
  48.   while(n>=0) {
  49.     scanf("%d", &n);
  50.     if(n>=0)
  51.       adiciona(n, &lt);
  52.   }
  53.   node *u = ultimo(&lt);
  54.   if (u) {
  55.     printf("%d\n", u->v);
  56.   } else {
  57.     printf("Lista vazia\n");
  58.   }
  59.  return 0;
  60. }
Success #stdin #stdout 0s 4456KB
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https://ideone.com/P4fFqO
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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