queue

/*

    ALGGORITMA STRUKTUR DATA (S1IF-07-F)
        Nama : Putri Agustyaningsih
        NIM  : 19102208

*/

#include <iostream>
#include <windows.h>
#include <conio.h>
#define MAX 8

using namespace std;

struct queue{
    string nama[MAX];
    int head;
    int tail;
}antrian;

void setAwal(){
    antrian.head=antrian.tail=-1;
}

int IsEmpty(){
    if(antrian.tail==-1)
        return 1;
    else
        return 0;
}
int IsFull(){
    if(antrian.tail==MAX-1)
        return 1;
    else
        return 0;
}

void Enqueue(struct queue** head, string nama){
    if(IsEmpty()==1){
        antrian.head=antrian.tail=1;
        antrian.nama[antrian.tail]=nama;
        cout<<nama<<endl;
    }else if (IsEmpty() == 0){
        antrian.tail++;
        antrian.nama[antrian.tail]=nama;
        cout << antrian.nama[antrian.tail] << endl;
    }
}

string Dequeue(){
    if (IsEmpty() == 0){
        string e = antrian.nama[antrian.head];
        for(int i=antrian.head;i<=antrian.tail-1;i++){
            antrian.nama[i] = antrian.nama[i+1];
        }
        antrian.tail--;
        cout << "Data keluar.";
        return e;
    }else
        cout << "kosong.";
}

void Tampil(){
    if(IsEmpty()==0){
        for(int i=antrian.head;i<=antrian.tail;i++){
            cout<<antrian.nama[i] << endl;
        }
    }else{
        cout<<"kosong.";
    }
}

int main()
{
    int pil;
    string nama;
    struct queue* head = NULL;
    do{
        system ("cls");
        cout<< "\n\n MENU PROGRAM\n\n";
        cout<<"1. Daftar Buku Awal\n";
        cout<<"2. Pindahkan Buku yang Sudah Dibaca\n";
        cout<<"3. Daftar Sisa Buku yang Belum Dibaca\n";
        cout<<"4. Exit\n";
        cout<< "\n Pilihan : ";
        cin>>pil;
        cout<<endl;

        switch(pil){
        case 1:
            cout << "   Daftar Buku Yang Ada: \n" <<endl;
            Enqueue(&head, " Risang Abdurrahman Gustiwa");
            Enqueue(&head, " Salsabila Firda Yunita");
            Enqueue(&head, " Fakhri Febriansyah");
            Enqueue(&head, " Putri Agustyaningsih");
            Enqueue(&head, " Juliar Ma'arif");
            Enqueue(&head, " Martinus Rexyfarrel Evan Sayoga");
            Enqueue(&head, " Galuh Kusuma Wardhani");
            getch();
            break;
        case 2:
            Dequeue();
            getch();
            break;
        case 3:
            Tampil();
            getch();
            break;
        case 4:
            system("EXIT");
            break;
        default:
            cout<<"Pilihan tidak tersedia";
            break;
        }
        cout << endl;
        system("pause");
    } while(pil!=4);
}