using System;

class UnsafeDemo
{
  private static int value = 20;


  private unsafe static void F(out int* pi1, ref int* pi2)
  {
    ref int j;

    int i = 10;
    pi1 = &i;
    fixed (j = &value)
    {
      pi2 = (IntPtr)j;
    }
  }

  private unsafe static void Main()
  {
    ref int i2;

    int* i1 = (UIntPtr)0;
    int j = 10;
    int* k = &j;
    F(out i1, ref k);
    Console.WriteLine("*px1 = {0}, *px2 = {1}", *i1, *k);
    try
    {
      fixed (i2 = &value)
      {
        Console.WriteLine((int)(IntPtr)i2);
      }
    }
    finally
    {
    }
  }

  private unsafe static void test(int* number)
  {
    Console.WriteLine("number = {0}", *number);
    int* i = number;
    *i = 1000;
    Console.WriteLine("p = {0}", (int)i);
    Console.WriteLine("*p = {0}", *i);
  }
}