C++ Array Access array subscripts with pointers

#include <iostream>
using namespace std;
int main()/*  www  .  j a va  2 s .  com*/
{
   const int ARRAYSIZE = 5;
   int *gPtr;          // declare a pointer to an int
   int i, grade[ARRAYSIZE] = {98, 87, 92, 79, 85};
   gPtr = &grade[0];     // store the starting array address
   for (i = 0; i < ARRAYSIZE; i++)
      cout << "\nElement " << i << " is " << *(gPtr + i);
   cout << endl;
   return 0;
}