Mengitung tarif Listrik PLN

/*
Program ini dibuat sebagai tugas Mengitung tarif Listrik PLN
© 2019 ISEP LUTPI NUR
*/
#include<iostream>
#include<fstream>
#include<time.h>
#include<conio.h>
#include<stdio.h>
using namespace std;
int main(){
    time_t now = time(0);
    tm *ltm = localtime(&now);
    int aa,ba;
    string ab,bb;
    //Converter Bulan akngka jadi bulan Teks
    aa=1+ltm->tm_mon;
    if (aa > 13 || aa < 0){
        cout << "Salah";
    }else {
        if(aa==1){
            ab="Januari";
        }
        if(aa==2){
            ab="Februari";
        }
        if(aa==3){
            ab="Maret";
        }
        if(aa==4){
            ab="April";
        }
        if(aa==5){
            ab="Mei";
        }
        if(aa==6){
            ab="Juni";
        }
        if(aa==7){
            ab="Juli";
        }
        if(aa==8){
            ab="Agustus";
        }
        if(aa==9){
            ab="September";
        }
        if(aa==10){
            ab="Oktober";
        }
        if(aa==11){
            ab="November";
        }
        if(aa==12){
            ab="Desember";
        }
    }

    int baris;
    //header
    cout << "+=====================================================" << endl;
    cout << "| PROGRAM PERHITUNGAN TARIF LISTRIK SEDERHANA" << endl;
    cout << "| "<< ltm->tm_hour <<":"<< ltm->tm_min <<":"<< ltm->tm_sec <<" | "<<ltm->tm_mday<<" "<<ab<<" "<<1900+ltm->tm_year<<" | ISEP LUTPI NUR"<<endl;
    cout << "+=====================================================" << endl;
    cout << "Masukan berapa alat yang akan di hitung : "; cin >> baris;

    float wat[baris], jam[baris], total[baris], totaljam[baris], tarif, hari;
    long totalbiaya=0;
    int pembayaran;
    ifstream baca;
    ofstream tulis;
    tulis.open("data.bin", ios::trunc | ios::binary);
    tulis.close();
    string kata,kalimat;
    cout << endl;

    cout << endl;
    cout << "==============INPUT PERHITUNGAN PER ALAT==============" << endl;
    cin.ignore(1,'\n');
    for(int i=1; i<=baris; i++){
        cout << "Nama alat " << i << "                      : ";
        getline(cin,kata);
        tulis.open("data.bin", ios::app | ios::binary);
        tulis << kata << "\n";
        tulis.close();
        cout << "   Tegangan listrik (Wat)        : ";
        cin >> wat[i];    salah:
        cout << "   Digunakan berapa jam per hari : ";
        cin >> jam[i];
        if(jam[i]>24){
            cout << "   +-----------------------------------+" << endl;
            cout << "   |  Input yang anda masukan melebihi |" << endl;
            cout << "   |  24 jam silahkan masukan ulang    |" << endl;
            cout << "   +-----------------------------------+" << endl;
            goto salah;
        }
        cin.ignore(1,'\n');
    }


    //Input harga per kWh
    cout << endl;
    cout << "===============INPUT PERHITUNGAN TARIF================" << endl;
    cout << "Masukan tarif per kWh Rp.  : "; cin >> tarif;
    cout << "Dihitung dalam berapa hari : "; cin >> hari;
    cout << endl;
    cout << "==OUTPUT PEMAKAIAN DAN TARIF BIAYA LISTRIK PER ALAT===" << endl;



    //Operasi penjumlahan
    for(int i=1; i<=baris; i++){
        total[i]=(wat[i]*jam[i])/1000;
        total[i]=total[i]*tarif;
        total[i]=total[i]*hari;
        totaljam[i]=jam[i]*hari;
        totalbiaya=totalbiaya+total[i];
    }



    //Output
    for(int i=1; i<=baris; i++){
        baca.open("data.bin", ios::in | ios::binary);
        for(int j=1; j<=i; j++){
            getline(baca,kalimat);
        }
        baca.close();
        cout << i << ". " << kalimat << endl;
        cout << "   Dipakai " << jam[i] << " jam perhari "<< wat[i] <<" wat dengan biaya Rp." << total[i]/hari << endl;
        cout << "   Dipakai " << totaljam[i] << " jam selama " << hari << " hari" << endl;
        cout << "   Jumlah biaya : Rp." << total[i] << endl;
    }

    //Total
    cout << endl;
    cout << "   Total Tarif Listrik Perhari : Rp." << totalbiaya/hari;
    cout << "\n" << endl;
    cout << "========================TOTAL=========================" << endl;
    cout << "   Total seluruh biaya listrik selama " << hari << " hari adalah " << endl;
    cout << "   Rp." << totalbiaya << endl;
    bayar:
    cout << "======================================================"  << endl;
    cout << "Masukan pembayaran: "; cin  >>  pembayaran;
    cout << pembayaran << " - " << totalbiaya << " = " << pembayaran-totalbiaya << endl;
        if(pembayaran < totalbiaya){
        int pembagi=(-1);
        cout << "   +-----------------------------------+" << endl;
        cout << "   |  Uang anda kurang Rp." << (pembayaran-totalbiaya)*pembagi << endl;
        cout << "   +-----------------------------------+" << endl;
        goto bayar;
        }
    cout << "Kembalian: " << pembayaran-totalbiaya << endl;
    cout << "======================================================"  << endl;

    // Cetak struk
    char struk;
    cout << "Cetak Struk [Y/T] ";
    cin  >>  struk;


    // Struk
    if(struk == 'Y' || struk == 'y'){
        ofstream datakwh;
        datakwh.open("struk.txt",ios::trunc);
        datakwh << "+=====================================================" << endl;
        datakwh << "| PROGRAM PERHITUNGAN TARIF LISTRIK SEDERHANA" << endl;
        datakwh << "| "<<ltm->tm_hour<<":"<<ltm->tm_min<<":"<<ltm->tm_sec<<" |"<<ltm->tm_mday<<" "<<ab<<" "<<1900+ltm->tm_year<<" | ISEP LUTPI NUR"<<endl;
        datakwh << "+=====================================================" << endl;

        datakwh << endl;
        datakwh << "===================PERHITUNGAN TARIF==================" << endl;
        datakwh << "Tarif per kWh Rp." << tarif << endl;
        datakwh << "Dihitung dalam " << hari << " hari" <<endl;
        datakwh << endl;
        datakwh << "======PEMAKAIAN DAN TARIF BIAYA LISTRIK PER ALAT======" << endl;


        for(int i=1; i<=baris; i++){
            baca.open("data.bin", ios::in | ios::binary);
            for(int j=1; j<=i; j++){
                getline(baca,kalimat);
            }
            baca.close();
            datakwh << i << ". " << kalimat << endl;
            datakwh << "   Dipakai " << jam[i] << " jam perhari "<< wat[i] <<" wat dengan biaya Rp." << total[i]/hari << endl;
            datakwh << "   Dipakai " << totaljam[i] << " jam selama " << hari << " hari" << endl;
            datakwh << "   Jumlah biaya : Rp." << total[i] << endl;
        }

        datakwh << endl;
        datakwh << "   Total Tarif Listrik Perhari : Rp." << totalbiaya/hari;
        datakwh << "\n" << endl;
        datakwh << "========================TOTAL=========================" << endl;
        datakwh << "   Total seluruh biaya listrik selama " << hari << " hari adalah " << endl;
        datakwh << "   Rp." << totalbiaya << endl;
        datakwh << "======================================================"  << endl;
        datakwh << pembayaran << " - " << totalbiaya << " = " << pembayaran-totalbiaya << endl;
        datakwh << "Kembalian: " << pembayaran-totalbiaya << endl;
        datakwh << "======================================================"  << endl;
        datakwh << "  PROGRAM PERHITUNGAN TARIF LISTRIK SEDERHANA SELESAI "  << endl;
        datakwh << "    \u00A9 2019 Isep Lutpi Nur 2113191079 USB YPKP BDG     "  << endl;
        datakwh << "======================================================\n\n\n\n\n\n\n\n\n";

        datakwh.close();
    }


    //Foother
    cout << "======================================================"  << endl;
    cout << "  PROGRAM PERHITUNGAN TARIF LISTRIK SEDERHANA SELESAI "  << endl;
    cout << "    \u00A9 2019 Isep Lutpi Nur 2113191079 USB YPKP BDG     "  << endl;
    cout << "======================================================";
    getch();
}