C++ Pointer notation and reference pointers as arrays with array notation

#include <iostream>
using namespace std;
void main()//from  www. j a  v  a  2s.  co  m
{
   int ctr;
   int iara[5] = {10, 20, 30, 40, 50};
   int *iptr;
   iptr = iara;        
   cout << "Using array subscripts:\n";
   cout << "iara\tiptr\n";
   for (ctr=0; ctr<5; ctr++)
   {
      cout << iara[ctr] << "\t" << iptr[ctr] << "\n";
   }
   cout << "\nUsing pointer notation:\n";
   cout << "iara\tiptr\n";
   for (ctr=0; ctr<5; ctr++)
   {
      cout << *(iara+ctr) << "\t" << *(iptr+ctr) << "\n";
   }
   return;
}