Changing array of one-dimensional to two-dimensional

#include <iostream>
#include <string>


using namespace std;
int main()
{
   int n;
   int i;
   int j;
   int a[50];
   int b[50];
  
   cout<<"__________________ARRAY 1-2 DIMENSI(SortingRekursif)________________"<<endl;
   cout<<"Masukkan n : ";
   cout<<endl;
   cin >> n;
   i =1;
   cout << "Array A" << endl;   while (!(i>n))
   {
      cout<<"Masukkan Data :";
      cout <<endl;
      cout << "data ke ["<<i<<",1]" << endl;     
      cin >> a[i]; i =i+1;
   }
  cout << "_____________________________________________________________________" << endl;
  cout << "Array B  " << endl;   j =1;
   while (!(j>n))
   {
        
      cout<<"Masukkan Data :";
      cout <<endl;
      cout << "data ke ["<<j<<",1]" << endl;  
      cin >> b[j];   j =j+1;
   }
   cout << "____________________________________________________________________" << endl;
   cout << "Matriks Dua Dimensi" << endl;   i =1;
   while (1)
   {
      j =1;
      if (i>n) break;
      while (!(j>2))
      {
         cout << "data ke ["<<i<<","<<j<<"] = "<<a[i] << endl;         j =j+1;
      }
      i =i+1;
   }


   system("pause");
   return 0;
}