contoh program c++

#include<stdio.h>
#include<conio.h>
#include<malloc.h>
typedef struct node{
int data;
node *left;
node *right;
};
node *root=NULL;
void Tambahnode(node **root, int isi) {
if((*root)==NULL){
node *baru;
baru= new node;
baru->data = isi;
baru->left = NULL;
baru->right = NULL;
(*root)=baru;
}
}
void preorder(node *root) {
if(root !=NULL) {
printf(“%i, “, root->data);
preorder(root->left);
preorder(root->right);
}
}
void inorder(node *root) {
if(root !=NULL) {
inorder(root->left);
printf(“%i, “, root->data);
inorder(root->right);
}
}
void postorder(node *root) {
if(root !=NULL) {
postorder(root->left);
postorder(root->right);
printf(“%i, “, root->data);
}
}
int main(){
int nil;
int x;
int y;
x=40;y=3;
gotoxy(x,y);
printf(“100\n”);
gotoxy(x-10,y+1);
printf(“90″);
gotoxy(x+10,y+1);
printf(“200\n”);
gotoxy(x-20,y+2);
printf(“80″);
gotoxy(x+20,y+2);
printf(“300\n”);
gotoxy(x-30,y+3);
printf(“70″);
gotoxy(x+30,y+3);
printf(“400\n”);
Tambahnode(&root,nil=100);
Tambahnode(&root->left,nil=90);
Tambahnode(&root->left->left,nil=80);
Tambahnode(&root->left->left->left,nil=70);
Tambahnode(&root->right,nil=200);
Tambahnode(&root->right->right,nil=300);
Tambahnode(&root->right->right->right,nil=400);
printf(“\nProgram By: AH. HANDOYO[1412110156]“);
printf(“\nTampilan secara PreOrder : “);
preorder(root);
printf(“\nTampilan secara InOrder : “);
inorder(root);
printf(“\nTampilan secara PostOrder : “);
postorder(root);
}