yaw

#include <iostream>
#include <cstdlib>

using namespace std;

struct node{
    string data;
    int har;
    node *next, *prev;
}*head, *tail;

void init(){
    head = NULL;
}

bool isempty() {
    if (head == NULL)
        return true;
    else return false;
}

void insertbelakang () {
    string x;
    int q;

    cout << "masukkan barang : ";
    cin >> x;
    cout << "masukkan harga : ";
    cin>>q;

    node *baru;
    baru = new node;


    baru -> data = x;
    baru -> har = q;
    baru -> next = NULL;
    baru -> prev = NULL;

    if (isempty()) {
        head = baru;
        tail = baru;
        tail -> next = NULL;
        tail -> prev = NULL;
    } else {

        tail -> next = baru;
        baru -> prev = tail;
        tail = baru;
        tail -> next = NULL;
    }
}

void cetak() {
    node *bantu = head;

    if (isempty()) {
        cout << "List kosong";
    } else {
        while (bantu != NULL) {
            cout << bantu -> data << "\t";
            cout << bantu -> har << "\n";
            bantu = bantu -> next;

        }
    }
}



int main()
{
    init();

    int pilih, q;
    string x;

    menu :
    system("cls");
    cout << "*****Menu*****\n";
    cout << "1. Input Barang\n";
    cout << "2. tampilkan list barang\n";
    cout << "3. Keluar\n";

    cout<< endl;
    cout << "pilih : ";
    cin >> pilih;

    switch(pilih){
case 1 :
    insertbelakang();
    system("pause");
    goto menu;
    break;
case 2 :
    cetak();
    cout << endl << endl;
    system("pause");
    goto menu;
    break;
case 3 :
    return 0;

    }
    return 0;
}