Menhitung gaji sesuai bnyaknya inputan data C++

# include <iostream.h>

# include <conio.h>

char nama[51][51];

int a, jum, gol[51], pokok[51], lembur[51], gaji[51];

void main()

{

 cout << "Jumlah data = "; cin >> jum;

 cout << endl;

 for (a=1; a<=jum; a++)

 {

  cout << "Masukkan data ke-" << a << endl

  << "Nama     : ";

  cin  >> nama[a];

  cout << "Golongan : "; cin >> gol[a];

  cout << "Lembur   : "; cin >> lembur[a];

 }

 cout << "===========================================================" << endl

      << "|   Nama   |   Golongan   |   Lembur   |   Gaji dibayar   |" << endl

      << "-----------+--------------+------------+-------------------" << endl;

 for (a=1; a<=jum; a++)

 {

  cout << "|   " << nama[a] << "   +       " << gol[a] << "      +      "

        << lembur[a] << "     +       Null       |" << endl;

 }

 cout << "===========================================================";

getch();

}