Tugas tidak kelar kelar

#include <iostream>
#include <conio.h>
#include <stdio.h>
#include <iomanip>
#include <stdlib.h>
#include <string.h>
using namespace std;
int main()
{

    int i,jumlah_siswa,bulan[10],jurusan[30];
    char namasiswa[15][20],jurusan_kelas[50],jurusan_nama[40],uang_spp=200000,lagi;
    long total_bayar=0;
ulang:
    cout << " \t \t PEMBAYARAN SPP BULANAN " <<endl;
    cout << " \n \n";
    cout<<"Jumlah Siswa : ";
    cin>> jumlah_siswa;
    cout<<endl;
    if(jumlah_siswa <= 5)
    {
   	for(i=1; i<=jumlah_siswa; i++)
      {
      cout <<" Siswa Ke = "<<i<<endl;
      cout <<" Nama Siswa :";
      cin >> namasiswa[i];
      cout <<" Kelas [1/2/3]:";
      cin >> jurusan_kelas[i];
      cout <<" Pembayaran bulan ke [ Ketik dengan angka ]:";
      cin >>bulan[i];
      cout <<" Jurusan [SMK/STM/SMIP/SMP]:";
      cin >> jurusan[i];
      if(jurusan[i] == 'a'|| jurusan[i] == 'A')
      {
      	strcpy(jurusan_nama, "SMK");
         if(jurusan_kelas[i] == 1)
         	bulan[i]=220000;
         else if(jurusan_kelas[i] == 2)
         	bulan[i]=240000;
         else if(jurusan_kelas[i] == 3)
            bulan[i]=250000;
      }
      else if(jurusan[i] == 'b' || jurusan[i] == 'B')
      {
      strcpy(jurusan_nama, "SMP");
         if(jurusan_kelas[i] == 1)
         	bulan[i]=220000;
         else if(jurusan_kelas[i] == 2)
         	bulan[i]=245000;
         else if(jurusan_kelas[i] == 3)
            bulan[i]=250000;
            }
        else if(jurusan[i] == 'c' || jurusan[i] == 'C')
      {
      strcpy(jurusan_nama, "STM");
         if(jurusan_kelas[i] == 1)
         	bulan[i]=220000;
         else if(jurusan_kelas[i] == 2)
         	bulan[i]=240000;
         else if(jurusan_kelas[i] == 3)
            bulan[i]=250000;
            }
        else if(jurusan[i] == 'd' || jurusan[i] == 'D')
      {
      strcpy(jurusan_nama, "SMIP");
         if(jurusan_kelas[i] == 1)
         	bulan[i]=220000;
         else if(jurusan_kelas[i] == 2)
         	bulan[i]=240000;
         else if(jurusan_kelas[i] == 3)
            bulan[i]=250000;
            }
        else if(jurusan[i] == 'e' || jurusan[i] == 'E')
      {
      strcpy(jurusan_nama, "SMA");
         if(jurusan_kelas[i] == 1)
         	bulan[i]=220000;
         else if(jurusan_kelas[i] == 2)
         	bulan[i]=240000;
         else if(jurusan_kelas[i] == 3)
            bulan[i]=250000;
            }
      else
      {
      	strcpy(namasiswa[i], "-");
         if(jurusan_kelas[i] == 1)
         	bulan[i]=0;
         else if(jurusan_kelas[i] == 2)
         	bulan[i]=0;
         else if(jurusan_kelas[i] == 3)
         	bulan[i]=0;
      }//tutup else
      }//tutup for
	}//tutup if


	system("CLS");
   cout<<"\t\t\t   PROGRAM PEMBAYARAN SPP"<<endl;

   cout<<"========================================================================"<<endl;
   cout<<"No   Nama Siswa  Jurusan    Bayar     Uang Tingkat         Total SPP"<<endl;
   cout<<"                             Bulan    Kelas                                "<<endl;
   cout<<"========================================================================"<<endl;
for (i=1; i<=jumlah_siswa; i++)
   {
   	cout<<setiosflags(ios::left)<<setw(3)<<i;
      cout<<setiosflags(ios::left)<<setw(8)<<namasiswa[i];
      cout<<setiosflags(ios::left)<<setw(6)<<jurusan[i];
      cout<<setiosflags(ios::left)<<setw(7)<<bulan[i];
      total_bayar=bulan[i]+uang_spp;
      cout<<setiosflags(ios::right)<<setw(7)<<total_bayar;
  cout<<endl;
   }
   cout<<endl<<endl;
   cout<<"\tApakah Anda Ingin Input Lagi [Y/T] ?";
   lagi = getch();
   if(lagi == 'Y' || lagi == 'y')
   	goto ulang;
   else
   	goto selesai;
   selesai:
   getch();

   }