#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef struct Queue
{
      char Name[80], Phone[80], Email[80];
      struct Node *head;
      struct Node *next;
} Queue;
Node *front(Queue q);
{
      if (q.head == NULL)
            return;
      return q.head;
}
void pop(Queue *q)
{
      Node *tmp;
      if (q.head == NULL)
      {
            printf("ERROR\n");
            return;
      }
      Node *tmp = q.head;
      q.head = q.head->next;
      free(tmp);
}
void push(Queue *q)
{
      Node *iterator;
      if (q.head == NULL)
            return;
      Node *iterator = q.head;
      while (iterator->next != NULL)
      {
            iterator = iterator->next;
      }
      iterator->next = p;
      return;
}
int main()
{
      return 0;
}