hw9_35_producer.cpp

#include<windows.h>
#include<stdio.h>
#include<conio.h>
#include<tchar.h>
#include<stdlib.h>
#include<iostream>
using namespace std;
//template<typename T,size_t N>
//template<size_t N>
//void catalan(int (&ans)[], int size)
void catalan(unsigned long long ans[], int size)
{
	int k;
	if(size==2)
	{
		ans[1]=1;
	}
	else
	{
		ans[1]=1;
		for(k=1;(k+1)!=size;k++)
		{
			ans[k+1]=ans[k]*(4*k+2)/(k+2);
		}
	}
}

 
TCHAR szMsg[]=TEXT("");

int main(int argc, char *argv[])
{
   HANDLE hMapFile,hFile;
   LPCTSTR pBuf;

	hFile = CreateFile("temp.txt",GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
    hMapFile = CreateFileMapping(
                 hFile,    // use paging file
                 NULL,                    // default security
                 PAGE_READWRITE,          // read/write access
                 0,                       // maximum object size (high-order DWORD)
                 1024,              // maximum object size (low-order DWORD)
                 TEXT("SharedObject"));                 // name of mapping object

   if (hMapFile == NULL)
   {
      printf(TEXT("Could not create file mapping object (%d).\n"),
             GetLastError());
      return 1;
   }
   pBuf = (LPTSTR) MapViewOfFile(hMapFile,   // handle to map object
                        FILE_MAP_ALL_ACCESS, // read/write permission
                        0,
                        0,
                        0);

   if (pBuf == NULL)
   {
    	printf(TEXT("Could not map view of file (%d).\n"), GetLastError());
    	CloseHandle(hMapFile);

      return 1;
   }
   
   int number = atoi(argv[1]);
   printf("the number is %d\n", number);
//   unsigned long long answer[number];
   int fact_size = number+1;   // 只使用 index 1 之後的array, 所以 設一個 fact_size 
   unsigned long long answer[fact_size];
   int i;
   catalan(answer, fact_size);  // Use to calculate
   
   char answer_string[100];
   char space[2]=" ";
   for(i=1;i<fact_size;i++)
   {
		itoa(answer[i],answer_string,10);
		strcat(szMsg,answer_string);
		if(i==(fact_size-1))
		{
			break;
		}
		strcat(szMsg,space);
   }
   
   CopyMemory((PVOID)pBuf, szMsg, (strlen(szMsg) * sizeof(CHAR)));
   printf("enter any thing to exit\n");
   getch();    // 按任意鍵 結束程式 
   
   UnmapViewOfFile(pBuf);

   CloseHandle(hMapFile);

   return 0;
   
}