using System;
using System.Runtime.InteropServices;
public unsafe class Memory
{
   // Heap API flags
   const int HEAP_ZERO_MEMORY = 0x00000008;
   static int ph = GetProcessHeap();
    
   public static void* Alloc(int size) 
   {
      void* result = HeapAlloc(ph, HEAP_ZERO_MEMORY, size);
      if (result == null) 
         throw new OutOfMemoryException();
      return result;
   }
}