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  1. #include <stdio.h>
  2.  
  3. struct No {
  4.     struct No* prox;
  5.     char valor;
  6. };
  7.  
  8. struct Pilha {
  9.     struct No* topo;
  10.  
  11. };
  12.  
  13. void empilhar(struct Pilha* pilha, char valor) {
  14.     struct No* novoNo = malloc(sizeof(struct No));
  15.  
  16.     novoNo->valor = valor;
  17.     novoNo->prox = pilha->topo;
  18.     pilha->topo = novoNo;
  19. }
  20.  
  21. void desempilhar(struct Pilha* pilha) {
  22.     pilha->topo = pilha->topo->prox;
  23. }
  24.  
  25. int main() {
  26.     struct Pilha p1;
  27.     printf("%c\n", p1.topo);
  28.     printf("%p\n", p1.topo);
  29.  
  30.     empilhar(&p1, 'E');
  31.     printf("%c\n", p1.topo->valor);
  32.  
  33.     empilhar(&p1, 'O');
  34.     printf("%c\n", p1.topo->valor);
  35.  
  36.     desempilhar(&p1);
  37.     printf("%c\n", p1.topo->valor);
  38.  
  39.     desempilhar(&p1);
  40.     printf("%p\n", p1.topo);
  41.  
  42.     return 0;
  43. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
Standard input is empty
stdout 

(nil)
E
O
E
(nil)
https://ideone.com/IPhjRe
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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