BIG INTEGER

#include <cstdlib>
#include <iostream>
                 
using namespace std;
class hitung{

      friend istream& operator>>(istream&, hitung&);
      friend ostream& operator<<(ostream&, hitung&);

      public:
             hitung();
             void jumlah();
             void kurang();
      private:
              long int x[50];
              long int y[25];
              int n;
              long int jum,kur;
              };
      hitung::hitung(){
                       cout<<"Menghitung big int"<<endl;}
      istream& operator>>(istream& in, hitung& a){
               cout<<"Masukkan banyaknya inputan :";
               in>>a.n;}
      ostream& operator<<(ostream& out, hitung& b){
               out<<"Banyaknya data :";
               out<<b.n<<endl;
               }

      void hitung::jumlah(){
             jum=0;
             for(int i=0; i<n; i++){
                     cout<<"Masukkan angka ke-"<<i+1<<":";
                     cin>>x[i];
                     jum=jum+x[i];
                     }
                     cout<<jum<<endl;
                     }
      void hitung::kurang(){
             kur=0;
             for(int j=0; j<n; j++){
                     cout<<"Masukkan angka ke-"<<j+1<<":";
                     cin>>y[j];
                     kur=kur+y[j];
                     }
                     cout<<kur<<endl;
                     }

int main(int argc, char *argv[])
{
     hitung c;
    cin>>c;
    c.jumlah();
    c.kurang();
    cout<<c;
    system("PAUSE");
    return EXIT_SUCCESS;
}

OUTPUT:

posting java

import jeliot.io.*;

public class GlobalMembers
{
public static void main()
    {
        vektor x = new vektor();
        vektor y = new vektor();
        vektor z = new vektor();
        x.masukan();
        x.keluar();
        y.masukan();
        y.keluar();
        z.penjumlahan();
        System.out.print("hasil 2 penjumlahan 2 vektor adalah :");
        z.keluar();
        z.perkalian();
        System.out.print("hasil perkalian skalar dengan vektor :");
        z.keluar();
    }
}

public class vektor
{
    public vektor()
    {
        banyak +=3;
        try{
        for(int i=0; i<banyak; i++){
        elemen[i] = 0;
        }
        }
        catch (ArrayIndexOutOfBoundsException e){
        System.out.print("aaaa :" +e.getMessage());}
        }
    public final void beri_nilaiBanyak()
    {
     System.out.print("masukkan nilai i :");
     n = Input.readInt();
     banyak=i;   
    }
   
    public final void masukan()
    {
        System.out.print("banyak elemen :");
        banyakA = Input.readInt();
        System.out.print("masukkan data vektor :");
        try{
        for(int i=0; i<banyak; i++){
        System.out.print("data ke-[" +i+1);
        System.out.print("] :");
        elemen[i] = Input.readInt();}}
        catch (ArrayIndexOutOfBoundsException e){
        System.out.print("aaaa :" +e.getMessage());}
       
        System.out.print("banyak elemen :");
        banyakB = Input.readInt();
        System.out.print("masukkan data vektor :");
        try{
        for(int i=0; i<banyak; i++){
        System.out.print("data ke-[" +i+1);
        System.out.print( "] :");
        elemen[i] = Input.readInt();}}
        catch (ArrayIndexOutOfBoundsException e){
        System.out.print("aaaa :" +e.getMessage());}
        }
    public final void keluar()
    {
        for(int i=0; i<banyak; i++){
        System.out.print("s[" +i+1);
        System.out.print("=" +elemen[i]);
        }
    }
    public final void penjumlahan()
    {
    if(banyakA>banyakB) banyak+=banyakA;
    else banyak +=banyakB;
    try{
    for(int i=0; i<banyak; i++){
    elemen[i]+=elemenA[i]+elemenB[i];}}
    catch (ArrayIndexOutOfBoundsException e){
    System.out.print("aaaa :" +e.getMessage());}
    }
    public final void perkalian(){
    System.out.print("masukkan nilai k :");
    k = Input.readInt();
    banyak+=banyakA;
    try {
    for(int i=0; i<banyak; i++){
    elemen[i]+=k*elemenA[i];
    }}
    catch (ArrayIndexOutOfBoundsException e){
    System.out.print("aaaa :" +e.getMessage());}
    }
     
      private int banyak;
      private int banyakA;
      private int banyakB;
      private int n;
      private double k;
      private int [] elemen = new int[100] ;
}