program stack

#include <iostream>
#include <conio.h>
#include <stdlib.h>
#include <string.h>

using namespace std;

struct coba
{
    char data[15][100];
    int i;
};
coba stack;

void isi()
{
    stack.i++;
    cout<<"Masukkan data = ";
    cin>>stack.data[stack.i];
}

void buang()
{
    if(stack.i>0)
    {
        cout<<"Data yang terambil : "<<stack.data[stack.i]<<endl;
        stack.i--;
    }
    else
    {
        cout<<"Tidak ada yang terambil\n";
    }
}

void isfull(int n){
    if(stack.i>=n)
        cout<<"Tumpukan Penuh Gayn!!\n";
    else
    {
        cout<<"Tumpukan masih ada Gayn... cukup\n";
    }
}

void isempty(int n){
    if(stack.i<=n)
        cout<<"Tumpukan kosong banget Gayn!!\n";
    else
        cout<<"Masih bisa diisi "<<n-stack.i<<" lagi\n";
}

void muncul()
{
    if(stack.i>0)
    {
        for(int e=stack.i;e>=1;e--)
            cout<<stack.data[e]<<endl;
    }
    else
    {
        cout<<"Tak ada data tersimpan\n";
    }
}

void hapus()
{
    cout<<"Data sudah dihapuskan\n";
    stack.i=0;
}

int main()
{
    int n,plh;
    awal:
    system("cls");
    system("color 3f");
    cout<<"\ncontoh program stack(Tumpukan)\n\n";
    cout<<"maksimal tumpukan data : ";cin>>n;
    stack.data[n];
    stack.i=0;
    pilihan:
    system("cls");
    system("color cf");
    cout<<"\n1. push\n2. pop\n3. print\n4. clear\n5. cek full\n6. cek kosong\n7. quit\n\n";
    cout<<"Pilih : ";cin>>plh;
    cout<<endl;

    system("cls");
    system("color df");
    if(plh==1)
    {
        if(stack.i<n)
        {
            isi();
        }
        else
        {
            cout<<"tumpukan penuh\n";
            getch();
        }
            goto pilihan;
    }
    else if(plh==2)
    {buang();getch();goto pilihan;}
    else if(plh==3)
    {muncul();getch();goto pilihan;}
    else if(plh==4)
    {hapus();getch();goto pilihan;}
    else if(plh==5)
    {isfull(n);getch();goto pilihan;}
    else if(plh==6)
    {isempty(n);getch();goto pilihan;}
    else if(plh==7)
    {cout<<"Kita Keluar!!!\n";getch();}
    getch();
    return 0;
}