This C++ code defines an ATM simulation program with the following functionality: 1. It prompts the user to enter their PIN and verifies it for authentication. 2. Upon valid PIN entry, it displays a main menu with options to check balance, transfer funds, or withdraw cash. 3. Based on the user's menu selection, it performs the corresponding transaction and updates the account balance.

1. #include <iostream>
#include <stdlib.h>
using namespace std;
int main()
{
int a,b,c,d,e,x,y,z;
int saldo = 1000000;
cout<<" Atm Sederhana"<<endl<<endl;
cout<<" >> MasukkanPIN Anda = ";
cin>>a;
system("cls");
if (a==12345)
{
cout<<" <======Atm Sedehana======>"<<endl<<endl;
b:
cout<<" 1. Cek Saldo"<<endl<<endl;
cout<<" 2. Transfer"<<endl<<endl;
cout<<" 3. Tarik Tunai"<<endl<<endl;
cout<<" Pilihan= ";
cin>>b;
}
if(a!=12345)
{
system("cls");
main();
}
if(b==1)

2. {
system("cls");
cout<<" <======Atm Sedehana======>"<<endl<<endl;
cout<<" Saldo Anda Rp"<<saldo<<endl<<endl;
cout<<" Kembali ke Menu Awal ? 1.YA 2.TIDAK";
cin>>z;
if ( z==1 )
{
system("cls");
goto b;
}
if ( z==2 )
{
system("cls");
cout<<" TerimahKasihTelahMelakukanTransaksi ^-^"<<endl;
exit(0);
}
}
if (b==2)
{
system("cls");
cout<<" <======Atm Sedehana======>"<<endl<<endl;
cout<<" MausukkanNomor Rekening Tujuan = ";
cin>>c;
cout<<endl;
cout<<" MausukkanJumlah Nominal Transfer = Rp.";
cin>>d;
saldo=saldo-d;
cout<<endl;
cout<<" Kembali ke Menu Awal ? 1.YA 2.TIDAK";
if ( z==1 )
{

3. system("cls");
goto b;
}
if ( z==2 )
{
system("cls");
cout<<" TerimahKasihTelahMelakukanTransaksi ^-^"<<endl;
exit(0);
}
}
if (b==3)
{
system("cls");
cout<<" <======Atm Sedehana======>"<<endl<<endl;
cout<<" MausukkanJumlah Penarikan = ";
cin>>c;
saldo=saldo-c;
cout<<" Sedang Memproses..... "<<endl;
cout<<" Kembali ke Menu Awal ? 1.YA 2.TIDAK"; cin>>z;
if ( z==1 )
{
system("cls");
goto b;
}
if ( z==2 )
{
system("cls");
cout<<" TerimahKasihTelahMelakukanTransaksi"<<endl;
exit(0);
}
}
}