// Program for creating a heterogeneous linked list
// BUGS: fails for strings e.g. abc -> a (b,c are not read)
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

const int SIZE =  80;

typedef enum { INT, CHAR, FLOAT } Type;
typedef struct node__ {
  void* data;
  Type type;
  struct node__* next;
} Node;

Node* create_int (int data) {
  Node* temp = NULL;
  if ((temp=(Node*)malloc (sizeof (Node))) == NULL) {
    fprintf (stderr, "Node creation failed in %s for data %d", __func__,  data);
    return NULL;
  }

  temp->data = malloc (sizeof(int));
  *(int*)(temp->data) = data;
  temp->type = INT;
  temp->next = NULL;

  return temp;
}

Node* create_char (char data) {
  Node* temp = NULL;
  if ((temp=(Node*)malloc (sizeof (Node))) == NULL) {
    fprintf (stderr, "Node creation failed in %s for data %c", __func__,  data);
    return NULL;
  }

  temp->data = malloc (sizeof(int));
  *(char*)(temp->data) = data;
  temp->type = CHAR;
  temp->next = NULL;

  return temp;
}

Node* create_float (float data) {
  Node* temp = NULL;
  if ((temp=(Node*)malloc (sizeof (Node))) == NULL) {
    fprintf (stderr, "Node creation failed in %s for data %f", __func__,  data);
    return NULL;
  }

  temp->data = malloc (sizeof(int));
  *(float*)(temp->data) = data;
  temp->type = FLOAT;
  temp->next = NULL;

  return temp;
}

Node* append_node (Node* front, Node* node) {
  if (front == NULL) {
    front = node;
  }
  else {
    Node* temp = front;
    while (temp->next != NULL)
      temp = temp->next;

    temp->next = node;
  }

  return front;
}

void print_list (Node* front) {
  Node* temp = NULL;
  for (temp = front; temp != NULL; temp = temp->next) {
    switch (temp->type) {
    case INT:
      printf ("%d ", *(int*)temp->data);
      break;
    case CHAR:
      printf ("%c ", *(char*)temp->data);
      break;
    case FLOAT:
      printf ("%g ", *(float*)temp->data);
      break;
    }
  }
  putchar ('\n');
}


int main () {
  Node* front;
  char str[SIZE];
  int i;
  char c;

  while (scanf("%s", str) > 0) {
    if (isalpha (str[0])) {
      front = append_node (front, create_char (str[0]));
    }
    else if (sscanf (str, "%d %c", &i, &c) > 0 && c == '.') {
      front = append_node (front, create_float (strtof (str, NULL)));
    }
    else {
      front = append_node (front, create_int (atoi(str)));
    }
  }

  print_list (front);

  return 0;
}