C语言仓库管理系统-数据结构 第5页
/*保存模块*/
void save(COM *head)
{ clrscr();
  gotoxy(8,13);
  printf("Please input saved goods'filename(limit to letter or number):");
  scanf("%s",filename1);
  if((fp=fopen(strcat(filename1,filename2),"wb"))==NULL)    /*以二进制只写方式打开一个流*/
   {printf("Fail to creat FILE!");
    getch( );
    return;
   }
  ptr1=ptr2=head;
  while(ptr1!=NULL)
  {if(fwrite(ptr1,sizeof(COM),1,fp)!=1)
    {printf("Fail to print message to FILE!");
     getch( );
     return;
   }
  ptr1=ptr1->next;
  }
  fclose(fp);
  gotoxy(10,24);
  printf("Saving success!Press any key to back to last Menu:");
  getch();
}
/*载入模块*/
COM * openfile( )
{int n=1;
 scanf("%s",filename1);
 if((fp=fopen(strcat(filename1,filename2),"rb"))==NULL)
 {gotoxy(15,13);
  printf("This filename isn't exist,please check if exist.\npress any key back to Menu");
  getch( );
  return(NULL);
  }
 if((ptr1=ptr2=(COM*)malloc(LEN))==NULL)
 {printf("No enough memory,fail to creat linklist!\nPlease press any key back to Menu\n");
 getch( );
 return(NULL);
 }
 if(fread(ptr1,sizeof(COM),1,fp)!=1)            /*从fp指向的流中读取1个字段，每个字段为COM的字符长，并把它们放到ptr1指向的字符数组中，文件的位置指示器随着所读取的字符数而下移*/
  {printf("Fail to print message from FILE!\nPlease press any key back to Menu\n");
   getch( );
   return(NULL);
   }
 if(ptr1->next==NULL)
  head=ptr1;
 else
 { do
  {if(n==1)
   head=ptr1;
  else ptr2->next=ptr1;
  n=n+1;
  ptr2=ptr1;
  if((ptr1=(COM*)malloc(LEN))==NULL)
   {printf("No enough memory,fail to creat linklist!\nPlease press any key to back to Menu\n");
   getch( );return(NULL);
    }
  if(fread(ptr1,sizeof(COM),1,fp)!=1)
  {printf("Fail to print message from FILE!\nPlease press any key to back to Menu\n");
  getch( );return(NULL);
  }
  }while(ptr1->next!=NULL);
   ptr2->next=ptr1;
 }
return(head);
fclose(fp);}            /*关闭文件函数*/
void main( )
{char message[ ]={"        ----*The instruction of GOODS SYSTEM*-----            \n\n"
                  "    You can input many kinds of messages,and you can use         \n"
                  "    goodname as FILEname                                 \n"
                  "    This SYSTEM can do operation like insert or delect to the     \n"
                  "    goodsmessage that have saved,then saved again.while you       \n"
                  "    can search message depend on the goodsnub or goodsname.  \n\n\n"
                  "      ---*Welcome to enter the GOODS SYSTEM!*---         \n"
               };
char menu[ ]={"      ******************MENU********************          \n\n\n"
       "                       *1.Input                                \n"
       "                       *2.Output                               \n"
       "                       *3.Insert                               \n"
       "                       *4.Delete                               \n"
       "                       *5.Search                               \n"
       "                       *6.Save                                 \n"
www.751com.cn
textbackground(LIGHTGRAY);
textcolor(BLUE);                               /*背景为银灰色，字为蓝色*/
clrscr( );
gotoxy(4,8);
printf("%s",message);
gotoxy(10,22);
printf("        Please press any key into the Menu!");
getch( );
do
{clrscr( );
gotoxy(1,7);
printf("%s",menu);
gotoxy(10,20);
printf("please choose a number from 0 to 6:");
scanf("%d",&sel);
switch(sel)
{case 1:head=input( );                 /*输入模块*/
        break;                       
 case 2:print( );                      /*输出模块*/
        break;
 case 3:head=insert( );                /*插入模块*/
        break;
 case 4:head=delet( );                /*删除模块*/
        break;
 case 5:search( );                     /*查找模块*/
        break;
 case 6:save(head);                   /*保存模块*/
        break;
 case 0:break;}
}while(sel!=0);
}

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