C/C++ Exercise: Access two-dimension array by pointer

#include <iostream>
#include <conio.h>

using std::cin;
using std::cout;
using std::endl;

int main(){
 cout << "http://dev-microsoft.blogspot.com/" << endl;
 cout << "Exercise: Access two-dimension array using pointer" << endl << endl;

 const int size_i = 3;
 const int size_j = 4;
 int a[size_i][size_j];
 

 //init array
 for(int i = 0; i < size_i; i++){
  for(int j = 0; j < size_j; j++){
   a[i][j] = i * 10 + j;
  }
 }

 cout << endl;
 cout << "Accessed as two dimension array" << endl;
 for(int i = 0; i < size_i; i++){
  for(int j = 0; j < size_j; j++){
   cout << a[i][j] << " ";
  }
  cout << endl;
 }

 cout << endl;

 int *p = *a;
 cout << "Accessed by pointer" << endl;
 for(int i = 0; i < size_i * size_j; i++){
  cout << i << ":" << *(p + i) << " ";
 }
 cout << endl;

 cout << endl;
 system("PAUSE");
 return 0;

}