program penjumlahan matriks

#include <cstdlib>
#include <iostream>
#include <iomanip.h>

using namespace std;
class aku{
      friend istream& operator >>(istream&, aku&);
      friend ostream& operator <<(ostream&, aku&);
     
      public  :
              aku();
              void proses();
      private :
              int i,j,a[10][10],b[10][10],hasil[100][100],baris,kolom;
      };
     
      aku::aku(){baris=3,kolom=3;}
           
      istream& operator >>(istream& in,aku& x){
               //cout<<"Banyak baris : "; in>>x.baris;
               //cout<<"Banyak kolom : "; in>>x.kolom;
               cout<<endl;
              
               cout<<"Matriks A  : " <<endl;
               for(x.i=0;x.i<x.baris;x.i++)
               for(x.j=0;x.j<x.kolom;x.j++){
                                            cout<<"Data  [" <<x.i+1 <<"][" <<x.j+1 <<"]  : "; in>>x.a[x.i][x.j];
                                            }
               cout<<endl <<"Matriks B  : " <<endl;
               for(x.i=0;x.i<x.baris;x.i++)
               for(x.j=0;x.j<x.kolom;x.j++){
                                            cout<<"Data  [" <<x.i+1 <<"][" <<x.j+1 <<"]  : "; in>>x.b[x.i][x.j];
                                            }
               }
      void aku::proses(){
           for(i=0;i<baris;i++)
           for(j=0;j<kolom;j++)
           hasil[i][j]=a[i][j] + b[i][j];
           }
          
     
      ostream& operator <<(ostream& out, aku& x){
               x.proses();
               cout<<endl <<endl <<"Hasil Penjumlahan Matriks A  &  B Yaitu  : " <<endl;
               for(x.i=0;x.i<x.baris;x.i++){
                                            for(x.j=0;x.j<x.kolom;x.j++)
                                            cout<<setw(4) <<x.a[x.i][x.j];
                                            cout<<"    ";
                                            for(x.j=0;x.j<x.kolom;x.j++)
                                            cout<<setw(4) <<x.b[x.i][x.j];
                                            cout<<"    ";
                                            for(x.j=0;x.j<x.kolom;x.j++)
                                            cout<<setw(4) <<x.hasil[x.i][x.j];
                                            cout<<"    ";
                                            cout<<endl <<endl;
                                            }
               }
              
int main(int argc, char *argv[])
{
    aku x;
   
    cout<<endl;
    cout<<"PENJUMLAHAN 2 MATRIKS YANG BERORDO 3x3" <<endl;
    cout<<"+++++++++++++++++++++++++++++++++++++++++++++++++++" <<endl <<endl;
    cin>>x;
    cout<<endl <<"++++++++++++++++++++++++++++++++++++++" <<endl;
    cout<<x;
    cout<<"++++++++++++++++++++++++++++++++++++++" <<endl;

   
    cout<<endl;
    system("PAUSE");
    return EXIT_SUCCESS;
}