#include <iostream>

using namespace std;

void fun ( void )
{
  int *p = new int[ 3 ];

  p[ 0 ] = 1;
  p[ 1 ] = 2;
  p[ 2 ] = 3;

  delete[ ] p;            //遵循1
  p = NULL;
}

int main ( void )
{
  fun ( );
  return ( 0 );
}