#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <assert.h>
#include <string.h>


#define SIZE 200

struct tree
{
 
  char value[SIZE];
  

  struct tree *left, *right;
};

struct tree* read_tree()
{
    char buffer[SIZE];
    memset(buffer,0,SIZE);
    char* r = fgets(buffer,SIZE,stdin);
    
    assert(r);
    struct tree* node = (struct tree*)calloc(1,sizeof(struct tree));
    memcpy(node->value,buffer,SIZE);
    


  
    node->left=NULL;
    node->right=NULL;

    if(node->value[0]!='*')
    {
        
        node->left=read_tree(node->left);
    
        node->right=read_tree(node->right);
    }
    return node;
}


void print_tree(struct tree* tree,int offset){
    for (int i = 0; i < offset; i++){
        printf(".");
    }
   
    if(tree)
        printf("%s",tree->value);
    if (tree->left){
        print_tree(tree->left,offset +3);
    }
    if (tree->right){
        print_tree(tree->right,offset +3);
    }
}


int main(void)
{

    struct tree *tr;

    tr=read_tree();
    char t;

    printf("Expert z bufetu to vie.\n");
    printf("Pozna 2 druhov ovocia a zeleniny.\n");

    struct tree *p=tr;
    do
    {
        printf("Odpovedajte 'a' pre prvu moznost alebo 'n' pre druhu moznost.\n");
        printf("%s",p->value);
        if(p->value[0]=='*')
            break;                
        do
        {
            t=fgetc(stdin);
            if(t=='a')
            {p=p->left; break;}
            if(t=='n')
            {p=p->right; break;}
        }while(1);
        
    }while(1);
    printf("Koniec\n");
  return 0;
}