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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. #define MAX 10
  5.  
  6. typedef struct Pilha pilha;
  7.  
  8. struct Pilha {
  9.     int qnt;
  10.     int dados[MAX];
  11. };
  12.  
  13. pilha* cria() {
  14.     pilha *p;
  15.     p = malloc(sizeof(pilha));
  16.     if(p != NULL)
  17.         p->qnt = 0;
  18.      return p;
  19. }
  20. void insere(pilha *p, int valor) {
  21.     p->dados[p->qnt] = valor;
  22.     p->qnt++;
  23. }
  24. void exibe(pilha *p) {
  25.     for(int i= 0; i<p->qnt; i++)
  26.         printf("%3d", p->dados[i]);
  27. }
  28.  
  29. pilha* inverte(pilha **p) {
  30.     pilha *outra = cria();
  31.     while((*p)->qnt >= 0 ) {
  32.          outra->dados[outra->qnt] = (*p)->dados[(*p)->qnt];
  33.         (*p)->qnt--;
  34.         outra->qnt++;
  35.     }
  36.     return outra;
  37. }
  38. int main() {
  39.  
  40.     pilha *p;
  41.     p = cria();
  42.     insere(p, 32);
  43.     insere(p, 45);
  44.     insere(p, 78);
  45.     exibe(p);
  46.  
  47.     p = inverte(&p);
  48.     printf("\n");
  49.     exibe(p);
  50.     return 0;
  51. }
  52.  
Success #stdin #stdout 0s 2300KB
comments (?)
stdin
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Standard input is empty
stdout
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 32 45 78
  0 78 45 32
https://ideone.com/Q1QL37
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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