save_dub.cpp

书店管理程序

  //Save_DuB.cpp
  #   include   <stdio.h>
  #   include   <dos.h>
  #   include   <conio.h>

  void Save_DuB(void)
  {
	int i;
	DuBLinkList info;
	FILE *fp5;
	if((fp5=fopen("","wb"))==NULL)
	  {
	  cprintf("Cannot open file\r\n");
	  return;
	  }
	 cprintf("\rSaving file\r\n");
	 cprintf("Wait");
	 for(i=0;i<6;i++)
	  { cprintf(".");
		delay(600);
	  }
	info=start;   //指针指向链表表头
	while(info)
	  {
	  fwrite(info,sizeof(DuBNode),1,fp5); //按记录写到文件中
	  info=info->next;         //指针后移
	  }
	fclose(fp5);
  }