Aplikasi sederhana dengan C++

1. #include <iostream>
#include <conio.h>
#include <windows.h>
using namespace std;
void gotoxy(int x, int y)
{
COORD coord;
coord.X = x;
coord.Y = y;
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
}
int main()
{
char lagi,nama_kasir[15], ntransaksi[10], kode_susu, jenis_susu[15], kode_kasir[15];
float uang_bayar, jumlah_beli, harga, tharga, jharga, diskon, total_bayar, kembali;
ulang:
system("cls");
cout<<"-------------------------------------------"<<endl;
cout<<"n TOKO SUSU BAYI "<<endl;
cout<<"n -MILK COUNTER- "<<endl;
cout<<"n==========================================="<<endl;
cout<<"Input Nomor Transaksi : ";cin>>ntransaksi;
cout<<"Input Kode Kasir [01/02/03] : ";cin>>kode_kasir;
cout<<"-------------------------------------------"<<endl;
cout<<"Pilih Kode Susu [N/L/B] : ";cin>>kode_susu;
cout<<"Input Jumlah Beli : ";cin>>jumlah_beli;
cout<<"-------------------------------------------"<<endl;
system("cls");
if (kode_susu == 'N'||kode_susu == 'n')
{
strcpy(jenis_susu,"Nutrilon Baby");
harga=125000;
}
else if (kode_susu == 'L'||kode_susu == 'l')
{
strcpy(jenis_susu,"Lactogen Baby");
harga=105000;
}
else if (kode_susu == 'B'||kode_susu == 'b')
{
strcpy(jenis_susu,"Morinaga");
harga=135000;

2. }
else
{
system("cls");
gotoxy(20,12);
cout<<" ANDA SALAH MEMASUKKAN KODE SUSU ";
gotoxy(20,13);
cout<<"**** TEKAN ENTER UNTUK MENGULANG *****";
getch();
system("cls");
goto ulang;
}
if (strcmp(kode_kasir, "01") == 0)
{
strcpy(nama_kasir,"Budi");
}
else if (strcmp(kode_kasir, "02") == 0)
{
strcpy(nama_kasir,"Slamet");
}
else if (strcmp(kode_kasir, "03") == 0)
{
strcpy(nama_kasir,"Paijo");
}
else
{
system("cls");
gotoxy(20,12);
cout<<" ANDA SALAH MEMASUKKAN KODE KASIR ";
gotoxy(20,13);
cout<<"**** TEKAN ENTER UNTUK MENGULANG *****";
getch();
system("cls");
goto ulang;
}
cout<<"-------------------------------------------"<<endl;
cout<<"n TOKO SUSU BAYI "<<endl;
cout<<"n -MILK COUNTER- "<<endl;
cout<<"n==========================================="<<endl;
cout<<"No. Nota : "<<ntransaksi<<" "<<"Nama Kasir : "<<nama_kasir;
cout<<"n-------------------------------------------"<<endl;
cout<<"Merk Susu : "<<jenis_susu<<endl;
cout<<"Harga : "<<harga<<endl;
cout<<"Jumlah Beli : "<<jumlah_beli<<endl;
cout<<"n-------------------------------------------"<<endl;

3. tharga=harga*jumlah_beli;
diskon=0.05*tharga;
jharga=tharga-diskon;
cout<<"Jumlah Harga : "<<jharga<<endl;
cout<<"Diskon : "<<diskon<<endl;
total_bayar=jharga-diskon;
cout<<"-------------------------------------------"<<endl;
cout<<"Total Bayar : "<<total_bayar<<endl;
cout<<"Uang Bayar : ";cin>>uang_bayar;
kembali = uang_bayar - total_bayar;
cout<<"Kembali : "<<kembali<<endl;
cout<<"-------------------------------------------"<<endl;
cout<<" Terima kasih Atas Kunjungan Anda "<<endl<<endl;
cout<<" Input Data Lagi?[y/t] : ";cin >> lagi;
if(lagi=='y'){
goto ulang;
}
getch();
}