c语言程序设计文件操作方法示例(CreateFile和fopen)

      char chBuffer[10] = "5469";
      DWORD dwWriteSize = 0;
      BOOL bRet = WriteFile(hDevice,chBuffer,4,&dwWriteSize,NULL);
      if(bRet)
      {
             printf("write file success /n");
      }
      FlushFileBuffers(hDevice);   //将缓冲区数据写入磁盘

      LONG IDistance = 0;
      DWORD dwPtr = SetFilePointer(hDevice,IDistance,NULL,FILE_BEGIN);  //调整文件指针到文件开头
      DWORD dwReadSize = 0;
      bRet = ReadFile(hDevice,chBuffer,10,&dwReadSize,NULL);
      if (bRet)
      {
              printf("chbuffer is %s /n",chBuffer);
      }
      CloseHandle(hDevice);
      return ;
}