#include<iostream.h>
#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
struct TNode{
char data[30];
TNode *next;
TNode *prev;
};
TNode *head, *tail;
void init(){
head = NULL;
tail = NULL;
};
int isEmpty(){
if(tail == NULL) return 1;
else return 0;
}
void insertDepan(char databaru[30]){
TNode *baru;
int i;
baru = new TNode;
for(i=0;i<=30;i++){
baru->data[i] = databaru[i];
}
baru->next = baru;
if(isEmpty()==1){
head=baru;
tail=baru;
head->next...
