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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. struct node {
  5.     int data;
  6.     struct node *left;
  7.     struct node *right;
  8. };
  9.  
  10. typedef struct node node;
  11.  
  12.  
  13. node* newNode(int data) {
  14.     node* node = malloc(sizeof(node));
  15.     node->data = data;
  16.     node->left = NULL;
  17.     node->right = NULL;
  18.     return node;
  19. }
  20.  
  21. void ImprimePreOrdemAux(node* arv, int nivel) {
  22.     if(arv!=NULL) {
  23.         if (nivel != 0) {
  24.             printf("-");
  25.         }
  26.         printf("%d",arv->data);
  27.         ImprimePreOrdemAux(arv->left, nivel + 1);
  28.         ImprimePreOrdemAux(arv->right, nivel + 1);
  29.     }
  30. }
  31.  
  32. void ImprimePreOrdem(node* arv) {
  33.     ImprimePreOrdemAux(arv, 0);
  34. }
  35.  
  36. int main(){
  37.     node *root = newNode(1);
  38.     root->left        = newNode(2);
  39.     root->right       = newNode(3);
  40.     root->left->left  = newNode(4);
  41.  
  42.     ImprimePreOrdem(root);
  43.     return 0;
  44. }
  45.  
Success #stdin #stdout 0s 9424KB
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1-2-4-3
https://ideone.com/MPAGgM
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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