C——货物管理系统

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <conio.h>        /*屏幕操作函数库*/

 /*主管权限数据格式化*/
 #define HEADER1_zg "-----------------------------货物管理系统(主管)--------------------------------\n"
 #define HEADER2_zg "| 编号 |  名称  | 进价 | 售价 | 产地 | 生产日期 |保质期| 库存 | 销量 |  收入  |\n"
 #define HEADER3_zg "|------|--------|------|------|------|----------|------|------|------|--------|\n"
 #define FORMAT_zg  "|%-6s|%-8s|%.2f |%.2f |%6s|%-4d%3d%3d| %4d | %4d | %4d |%.2f |\n"
 #define DATA_zg p->data.numbs,p->data.name,p->data.purchase,p->data.sales,p->data.place,p->data.Date.year,p->data.Date.mouth,p->data.Date.day,p->data.days,p->data.stock,p->data.salesnumb,p->data.income
 #define END_zg     "-------------------------------------------------------------------------------\n"

 /*普通权限数据格式化*/
 #define HEADER1_pt "----------------货物管理系统（普通）--------------------\n"
 #define HEADER2_pt "| 编号 |  名称  | 售价 | 产地 | 生产日期 |保质期| 销量 |\n"
 #define HEADER3_pt "|------|--------|------|------|----------|------|------|\n"
 #define FORMAT_pt  "|%-6s|%-8s| %.2f|%6s|%-4d%3d%3d| %4d | %4d |\n"
 #define DATA_pt p->data.numbs,p->data.name,p->data.sales,p->data.place,p->data.Date.year,p->data.Date.mouth,p->data.Date.day,p->data.days,p->data.salesnumb
 #define END_pt    "--------------------------------------------------------\n"

 int yhflag=;        /*是否优惠*/
 int incomflag=;   /*是否计算收入*/
 int dateflag=;   /*是否输入日期*/
 int saveflag=;   /*是否需要保存*/
 char zg[]="zg";
 char pt[]="pt";

 struct date
 {
     int year;
     int mouth;
     int day;
 };

 /*货物基本信息*/
 struct goods
 {
     char numbs[];    /*编号*/
     char name[];        /*名称*/
     float purchase;        /*进价*/
     float sales;    /*售价*/
     char place[];    /*产地*/
     struct date Date;    /*生产日期*/
     int days;  /*保质期*/
     int datecha; /*保质期截止日期差*/
     int stock;    /*库存量*/
     int  salesnumb;    /*销量*/
     float income;    /*收入*/
 };
 typedef struct node
 {
     struct goods data;
     struct node *next;
 }Node,*Link;

 /*格式化输出主管表头*/
 void printheader_zg()
 {
     printf(HEADER1_zg);
     printf(HEADER2_zg);
     printf(HEADER3_zg);
 }
 /*格式化输出普通表头*/
 void printheader_pt()
 {
     printf(HEADER1_pt);
     printf(HEADER2_pt);
     printf(HEADER3_pt);
 }
 /*格式化输出主管表中数据*/
 void printdata_zg(Node *pp)
 {
     Node *p;
     p=pp;
     printf(FORMAT_zg,DATA_zg);
 }
 /*格式化输出普通表中数据*/
 void printdata_pt(Node *pp)
 {
     Node *p;
     p=pp;
     printf(FORMAT_pt,DATA_pt);
 }
 /*输出案件错误信息*/
 void wrong()
 {
     printf("\n\n\n\n*******错误：输入错误，按任意键继续*******\n");
     getchar();
 }
 /*输出为查找到货物的信息*/
 void Nofind()
 {
     printf("\n*****无此货物信息！*****\n");
     getchar();
 }
 /*主管显示菜单*/
 void Disp(Link L,char s[])
 {
     Node *p;
     p=L->next;
     if (!p) /*空，则*/
     {
         printf("\n没有录入货物信息\n");
         getchar();
         return ;
     }
     printf("\n\n");
     if (strcmp(zg,s)==)
     {
         printheader_zg();
         while (p)
         {
             printdata_zg(p);
             p=p->next;
             printf(HEADER3_zg);
         }
     }
     else
     {
         printheader_pt();
         while (p)
         {
             printdata_pt(p);
             p=p->next;
             printf(HEADER3_pt);
         }
     }

     getchar();
 }
 /*返回链表中符合要求的节点的指针，s[]保存用户查找内容，NaorNum[]保存按什么查找”name,num“*/
 Node *Locate(Link L,char s[],char NaorNum[] )
 {
     Node *p;
     if (strcmp(NaorNum,"num")==)
     {
         p=L->next;
         while (p)
         {
             if (strcmp(p->data.numbs,s)==)
                 return p;
             p=p->next;
         }
     }
     else if (strcmp(NaorNum,"name")==)
     {
         p=L->next;
         while (p)
         {
             if (strcmp(p->data.name,s)==)
                 return p;
             p=p->next;
         }
     }
     return ;     /*未找到，返回空指针*/
 }
 /*平润年判断*/
 int Year_pd(int year)
 {
     int flag;
     if ((year%==&&year%!=)||year%==)
     {/*闰年*/
         flag=;
     }
     else
     {/*平年*/
         flag=;
     }
     return flag;
 }
 /*月份对应的天数*/
 int Day_pd(int mouth,int flag)
 {
     int day;
     switch(mouth)
     {
     case :
     case :
     case :
     case :
     case :
     case :
     case :day=;break;
     case :
     case :
     case :
     case :day=;break;
     case :if (flag) day=;
            else day=;break;
     }
     return day;
 }
 /*输入字符串，并进行验证,用户的输入通过*t输出*/
 void S_input(char *t,int lens,char *notice)
 {
     char str[];
     do
     {
         printf(notice);
         scanf("%s",str);
         if(strlen(str)>lens)
             printf("\n超过了要求长度，重新输入\n");
     } while (strlen(str)>lens);
     strcpy(t,str);
 }

 int Num_input(char *notice)
 {
     int a;
     do
     {
         printf(notice);
         scanf("%d",&a);
         if(a<) printf("\n数字必须大于零\n");
     } while (a<);
     return a;
 }
 /*输入月份进行验证*/
 int Mou_input(char *notice)
 {
     int mouth=;
     do
     {
         printf(notice);
         scanf("%d",&mouth);
         if (mouth>||mouth<)
             printf("\n月份必须在(1~12)之间！\n");
     } while (mouth>||mouth<);
     return mouth;
 }
 /*输入天数进行验证*/
 int Day_input(char *notice,int year,int mouth)
 {
     int day=;
     int nlimit,flag;
     flag=Year_pd(year);
     do
     {
         printf(notice);
         scanf("%d",&day);
         nlimit=Day_pd(mouth,flag);
         if (day>nlimit||day<)
             printf("\n日期必须在(1~%d)之间！\n",nlimit);
     } while (day>nlimit||mouth<);
     return day;
 }
 /*增加货物记录*/
 void Add_goods(Link L)
 {
     Node *p,*r,*s;
     char ch,flag=,num[];
     r=L;
     s=L->next;
     system("cls");
     Disp(L,zg);
     while ()
     {
         while () /*输入编号，保证没有被使用，若输入为0，则推出*/
         {
             S_input(num,,"输入货物编号（按‘0’返回菜单界面）：");
             flag=;
             if (strcmp(num,"")==) return;
             s=L->next;
             while (s) /*查询货物编号是否存在，若存在，要去输入新编号*/
             {
                 if (strcmp(s->data.numbs,num)==)
                 {
                     flag=;
                     break;
                 }
                 s=s->next;
             }
             if (flag)
             {
                 getchar();
                 printf("货物编号：%s已存在，是否要重新输入？（y/n）",num);
                 scanf("%c",&ch);
                 if(ch=='y'||ch=='Y')
                     continue;
                 else
                     return;
             }
             else
                 break;
         }
         p=(Node *)malloc(sizeof(Node));
         if (!p)
         {
             printf("\n没有申请到");
             return; /*返回到主界面*/
         }
         strcpy(p->data.numbs,num);
         S_input(p->data.name,,"名称：");
         p->data.purchase=Num_input("进价：");
         p->data.sales=Num_input("售价：");
         S_input(p->data.place,,"产地：");
         p->data.Date.year=Num_input("成产日期：年：");
         p->data.Date.mouth=Mou_input("         月：");
         p->data.Date.day=Day_input("         日：",p->data.Date.year,p->data.Date.mouth);
         p->data.days=Num_input("保质期（天）：");
         p->data.stock=Num_input("库存：");
         p->data.salesnumb=Num_input("销量：");
         p->data.income=;
         p->next=r->next;
         r->next=p; /*前插*/
     }
     return ;
 }
 int select(int a,int b)               /*菜单选择*/
 {
     int n;
     do
     {
         printf("\n\n");
         printf("%15s"," ");
         printf("请输入一个数（%d~%d): [ ]\b\b",a,b);
         scanf("%d",&n);
     } while (n<a||n>b);
     return n;
 }
 /*实时计算实际收益*/
 void Sum_Income(Link L)
 {
     Node *p;
     p=L->next;
     while (p)
     {
         p->data.income=p->data.salesnumb*(p->data.sales-p->data.purchase);
         p=p->next;
     }
     incomflag=;
     return ;
 }
 /*查询的通用方法*/
 void Sea_by_ways(Link L,Node *p,char s[])
 {
     if (p)
     {
         if (strcmp(zg,s)==)
         {
             printheader_zg();
             printdata_zg(p);
             printf(END_zg);
             printf("按任意键返回...");
             getchar();
         }
         else
         {
             printheader_pt();
             printdata_pt(p);
             printf(END_pt);
             printf("按任意键返回...");
             getchar();
         }
     }
     else
     {
         Nofind();
         getchar();
     }
 }
 /*按编号或货物名称查询*/
 void Sea_by_name(Link L,char s[])
 {
     Node *p;
     char ss[];
     system("cls");
     S_input(ss,,"请输入要查找的货物名称：");
     p=Locate(L,ss,"name");
     Sea_by_ways(L,p,s);
 }
 void Sea_by_num(Link L,char s[])
 {
     Node *p;
     char ss[];
     system("cls");
     S_input(ss,,"请输入要查找的货物编号：");
     p=Locate(L,ss,"num");
     Sea_by_ways(L,p,s);
 }
 /*日期相对于本年的天数*/
 int Sum_day(int year,int mouth,int day)
 {
     int i,flag,days,sum=;
     flag=Year_pd(year);
     for (i=;i<mouth;i++)
     {
         days=Day_pd(i,flag);
         sum+=days;
     }
     return sum+day;
 }
 /*两个日期差值*/
 void Datecha(Link L)
 {
     int year,mouth,day;
     Node *p;
     p=L->next;
     year=Num_input("今天日期：年:");
     mouth=Mou_input("月:");
     day=Day_input("日：",year,mouth);
     dateflag=;
     if (!p)
     {
         printf("***无货物信息，不用输入日期***\n");
         getchar();
         return ;
     }
     else
     {
         while (p)
         {
             p->data.datecha=Sum_day(year,mouth,day)-Sum_day(p->data.Date.year,p->data.Date.mouth,p->data.Date.day);
             p=p->next;
         }
     }
 }

 void Dz_by_data( Link L)
 {
     Node *p,*r;
     Link l;
     int year,mouth,day,count=;
     p=L->next;
     l=(Node *)malloc(sizeof(Node));
     l->next=NULL;
     system("cls");
     if (!dateflag)
     {
         Datecha(L);
     }
     printf("| 编号 |  名称  |过期差值|\n");
     while (p)
     {
         printf("|%-6s|%-8s|  %4d  |",p->data.numbs,p->data.name,p->data.datecha);
         if (p->data.days>=p->data.datecha)
         {
             /*优惠的标示优惠*/
             if (p->data.days-p->data.datecha<=)
             {
                 count++;
                 p->data.sales=p->data.sales/;
                 printf("已优惠\n");
                 /*        Ltol(l,p,p->next);*/
             }
             else
             {
                 printf("\n");
             }
         }
         else
         {
             printf("该商品过期,请删除\n");
         }
         p=p->next;
     }

     if(!count)
     {
         printf("/n***没有差10天过期的货物***/n");
         getchar();
         return;
     }
     else
     {
         printf("共有%d中商品打折",count);
         yhflag=;
         saveflag=;
         Disp(L,zg);
     }
 }
 /*删除*/
 void Del_by_ways(Link L,Node *p)
 {
     Node *q;
     char ch;
     if (p)
     {
         q=L;
         while(q->next!=p)
             q=q->next;
         printheader_zg();
         printdata_zg(p);
         printf(END_zg);
         getchar();
         printf("请确定是否要删除该货物信息(y/n):");
         scanf("%c",&ch);
         if (ch=='y'||ch=='Y')
         {
             q->next=p->next;
             free(p);
             printf("\n成功删除该货物信息\n");
             saveflag=;
             getchar();
             return;
         }
         else
         {
             printf("\n没有删除该货物信息\n");
             getchar();
             return;
         }
     }
     else
     {
         Nofind();
         getchar();
     }
 }
 /*通过名称删除*/
 void Del_by_name(Link L)
 {
     Node *p;
     char s[];
     system("cls");
     S_input(s,,"请输入要查删除的货物名称：");
     p=Locate(L,s,"name");
     Del_by_ways(L,p);
 }
 /*通过编号删除*/
 void Del_by_num(Link L)
 {
     Node *p;
     char s[];
     system("cls");
     S_input(s,,"请输入要查删除的货物的编号：");
     p=Locate(L,s,"num");
     Del_by_ways(L,p);
 }

 /*补货信息*/
 void Buhuo(Link L)
 {
     Node *p,*q;
     int i=;
     p=L->next;
     system("cls");
     if (p)
     {
         q=L->next;
         printf("|  编号  |  名称  |库存|销量|剩余| \n");
         while (q)
         {
             /*统计库存，销量，剩余*/
             printf("|%-8s|%-8s|%-4d|%4d|%4d|\n",q->data.numbs,q->data.name,q->data.stock,q->data.salesnumb,q->data.stock-q->data.salesnumb);
             q=q->next;
         }
         while (p)
         {
             if ((p->data.stock-p->data.salesnumb)<)
             {
                 if (i==)
                 {
                     printf("需要补货的货物分别是\n");
                     printf("|  编号  |商品名称|\n");
                 }
                 printf("|%-8s|%8s|\n",p->data.numbs,p->data.name);
                 i++;
             }
             p=p->next;
         }
         if (i)
         {
             printf("共%d种货物\n",i);
             getchar();
             return;
         }
         else
         {
             printf("没有需要补充的货物种类\n");
             getchar();
             return;
         }
     }
     else
     {
         printf("\n***没有货物信息***\n");
         printf("\n按任意键返回...\n");
         getchar();
         return ;
     }
 }

 void Sort_by_ways(Link L,char s[],int n)
 {
     int flag=,a;
     Node *p,*q,*lq,*fq;   /*fq记下节点前驱，lq记下节点的后驱，q每次冒泡遍历，p控制遍历,qq用来交换地址*/
     p=L->next;
     system("cls");
     while (p)
     {
         fq=L;
         q=fq->next;
         while (lq=q->next)
         {
             if (strcmp(zg,s)==)
             {
                 switch (n)
                 {
                 case :a=strcmp(q->data.name,lq->data.name);break;
                 case :a=strcmp(q->data.numbs,lq->data.numbs);break;
                 case :a=(q->data.salesnumb>lq->data.salesnumb);break;
                 case :if(!incomflag) Sum_Income(L); a=(q->data.income>lq->data.income);break;
                 case :if (!dateflag) Datecha(L);a=(q->data.datecha>lq->data.datecha);break;
                 }
             }
             else
             {
                 switch (n)
                 {
                 case :a=strcmp(q->data.name,lq->data.name);break;
                 case :a=strcmp(q->data.numbs,lq->data.numbs);break;
                 case :a=(q->data.sales>lq->data.sales);break;
                 case :a=(q->data.salesnumb>lq->data.salesnumb);break;
                 case :if (!dateflag) Datecha(L);a=(q->data.datecha>lq->data.datecha);break;
                 }
             }

             /*if ((n==1)?(strcmp(q->data.name,lq->data.name)):(strcmp(q->data.numbs,q->data.numbs)))*/
             if(a>)
             {
                 flag=;
                 q->next=lq->next;
                 lq->next=q;
                 fq->next=lq;
             }
             fq=fq->next;
             q=fq->next;
         }
         if(flag==) break;
         p=p->next;
     }
     if (strcmp(zg,s)==)
         Disp(L,zg);
     else
         Disp(L,pt);
 }

 void Wb_Save(Link L)
 {
     FILE *out;
     Node *p;
     int count=;
     if ((out=fopen("d:\\Goods.txt","w"))==NULL)
     {
         printf("打开文件失败！\n");
         getchar();
         return;
     }
     p=L->next;
     fprintf(out,HEADER1_zg);
     fprintf(out,HEADER2_zg);
     fprintf(out,HEADER3_zg);
     while (p)
     {
         fprintf(out,FORMAT_zg,DATA_zg);
         p=p->next;
         fprintf(out,HEADER3_zg);
         count++;
     }
     if (count>)
     {
         getchar();
         printf("\n\n\n***文本文件保存完成，共%d条货物信息保存***\n",count);
         getchar();
         saveflag=;
     }
     else
     {
         system("cls");
         printf("没有货物信息，没有货物信息保存\n");
         getchar();
     }
     fclose(out); /*关闭此文件*/
 }
 void Er_Save(Link L)
 {
     FILE *out;
     Node *p;
     int count=;
     if ((out=fopen("d:\\Goods","wb"))==NULL)
     {
         printf("打开文件失败！\n");
         getchar();
         return;
     }
     p=L->next;

     while (p)
     {
         if (fwrite(p,sizeof(Node),,out))
         {
             p=p->next;
             count++;
         }
         else
         {
             break;
         }
     }
     if (count>)
     {
         getchar();
         printf("\n\n\n***二进制文件保存完成，共%d条货物信息保存***\n",count);
         getchar();
         saveflag=;
     }
     else
     {
         system("cls");
         printf("没有货物信息，没有货物信息保存\n");
         getchar();
     }
     fclose(out); /*关闭此文件*/
 }
 void Menu_sort_zg()
 {
     system("cls");
     printf("\n\n\n");
     printf("%30s%s"," ","     排序货物信息   \n\n");
     printf("%30s%s"," ","********功能*******\n\n");
     printf("%30s%s"," ","*      1.按名称   *\n\n");
     printf("%30s%s"," ","*      2.按编号   *\n\n");
     printf("%30s%s"," ","*      3.按销量*\n\n");
     printf("%30s%s"," ","*      4.按利润*\n\n");
     printf("%30s%s"," ","*      5.按保期  *\n\n");
     printf("%30s%s"," ","*      6.返回     *\n\n");
     printf("%30s%s"," ","*      7.退出     *\n\n");
     printf("%30s%s"," ","********************\n");
 }
 void Menu_sort_pt()
 {
     system("cls");
     printf("\n\n\n");
     printf("%30s%s"," ","     排序货物信息   \n\n");
     printf("%30s%s"," ","********功能*******\n\n");
     printf("%30s%s"," ","*      1.按名称   *\n\n");
     printf("%30s%s"," ","*      2.按编号   *\n\n");
     printf("%30s%s"," ","*      3.按售价   *\n\n");
     printf("%30s%s"," ","*      4.按销量  *\n\n");
     printf("%30s%s"," ","*      5.按保期  *\n\n");
     printf("%30s%s"," ","*      6.返回     *\n\n");
     printf("%30s%s"," ","*      7.退出     *\n\n");
     printf("%30s%s"," ","********************\n");
 }
 void Menu_del()
 {
     system("cls");
     printf("\n\n\n");
     printf("%30s%s"," ","     删除货物信息   \n\n");
     printf("%30s%s"," ","********功能*******\n\n");
     printf("%30s%s"," ","*      1.按名称   *\n\n");
     printf("%30s%s"," ","*      2.按编号   *\n\n");
     printf("%30s%s"," ","*      3.返回     *\n\n");
     printf("%30s%s"," ","*      4.退出     *\n\n");
     printf("%30s%s"," ","********************\n");
 }
 void Menu_Sea()
 {
     system("cls");
     printf("\n\n\n");
     printf("%30s%s"," ","     查询货物信息   \n\n");
     printf("%30s%s"," ","********功能*******\n\n");
     printf("%30s%s"," ","*      1.按名称   *\n\n");
     printf("%30s%s"," ","*      2.按编号   *\n\n");
     printf("%30s%s"," ","*      3.返回     *\n\n");
     printf("%30s%s"," ","*      4.退出     *\n\n");
     printf("%30s%s"," ","********************\n");
 }
 void Menu_Qx()                   /*权限菜单*/
 {
     system("cls");
     printf("\n\n\n");
     printf("%25s%s"," ","        欢迎进入             \n");
     printf("%25s%s"," ","     货物管理体统   \n\n\n");
     printf("%25s%s"," ","**********功能*********\n\n");
     printf("%25s%s"," ","*        1.主管       *\n\n");
     printf("%25s%s"," ","*        2.普通用户   *\n\n");
     printf("%25s%s"," ","*        3.退出       *\n\n");
     printf("%25s%s"," ","***********************\n");
 }
 void Menu_zg()                       /*主管菜单*/
 {
     system("cls");
     printf("\n\n\n");
     printf("%15s%s"," ","               货物管理体统                               \n\n\n");
     printf("%15s%s"," ","*****************主管功能******************\n\n");
     printf("%15s%s"," ","*              1.录入货物信息             *\n");
     printf("%15s%s"," ","*              2.删除货物信息             *\n");
     printf("%15s%s"," ","*              3.查找货物信息             *\n");
     printf("%15s%s"," ","*              4.显示货物信息             *\n");
     printf("%15s%s"," ","*              5.差10天过物信息（促销)    *\n");
     printf("%15s%s"," ","*              6.统计货物数量（补货）     *\n");
     printf("%15s%s"," ","*              7.实时收益                 *\n");
     printf("%15s%s"," ","*              9.排序日期差               *\n");
     printf("%15s%s"," ","*              10.保存文件                *\n");
     printf("%15s%s"," ","*              11.返回                    *\n");
     printf("%15s%s"," ","*              12.退出                    *\n");
     printf("%15s%s"," ","*******************************************\n");
 }
 void Menu_pt()                        /*普通菜单*/
 {
     printf("%15s%s"," ","               货物管理体统                               \n\n\n");
     printf("%15s%s"," ","*****************普通用户功能***************\n\n");
     printf("%15s%s"," ","*              1.查找货物信息                   *\n");
     printf("%15s%s"," ","*              2.显示货物信息                   *\n");
     printf("%15s%s"," ","*              3.排序货物销量                   *\n");
     printf("%15s%s"," ","*              4.返回                           *\n");
     printf("%15s%s"," ","*              5.退出                          *\n");
     printf("%15s%s"," ","*************************************************\n");
 }
 void Isaveflag(Link L)
 {
     char ch;
     if (saveflag)
     {
         printf("您已经修改数据了，是否要保存退出（y/n）：");
         getchar();
         scanf("%c",&ch);
         if (ch=='y'||ch=='Y')
         {
             Wb_Save(L);
             Er_Save(L);
             exit();
         }
         else
             exit();
     }
     else
         exit();
 }
 int IsPassword()                      /*密码是否通过*/
 {
     char password[];
     char mypassword[]="";
     static int n=;
     int i;
     system("cls");
     for (;n>;n--)
     {
         switch(n)
         {
         case :
         case : printf("密码错误，您还有%d次机会,请再输入：",n);break;
         case : printf("请输入6位进入主管功能的密码：");getchar();break;
         }
         for ( i=;i<;i++)
         {
             password[i]=getch();
             printf("*");
         }
         getchar();
         password[]='\0';
         if (strcmp(mypassword,password)==)
         {
             printf("***密码正确***");
             getchar();
             return ;
         }
     }
     printf("恭喜你，三次都输错了,无法再输入密码,按任意键返回...");
     getchar();
     return ;
 }

 void Sort_goods(Link L,char s[])
 {
     if (!L->next)
     {
         system("cls");
         printf("\n没有货物信息，无法使用排序功能\n");
         getchar();
         return;
     }
     else
     {
         if (strcmp(zg,s)==)
         {
             system("cls");
             for (;;)
             {
                 Menu_sort_zg();
                 switch(select(,))
                 {
                 case :Sort_by_ways(L,zg,);break;    /*名称*/
                 case :Sort_by_ways(L,zg,);break;     /*编号*/
                 case :Sort_by_ways(L,zg,);break;     /*销量*/
                 case :Sort_by_ways(L,zg,);break;     /*利润*/
                 case :Sort_by_ways(L,zg,);break;     /*保期*/
                 case :return;break;
                 case :Isaveflag(L);break;
                 }
                 getchar();
             }
         }
         else
         {
             system("cls");
             for (;;)
             {
                 Menu_sort_pt();
                 switch(select(,))
                 {
                 case :Sort_by_ways(L,pt,);break;        /*名称*/
                 case :Sort_by_ways(L,pt,);break;        /*编号*/
                 case :Sort_by_ways(L,pt,);break;        /*售价*/
                 case :Sort_by_ways(L,pt,);break;        /*销量*/
                 case :Sort_by_ways(L,pt,);break;        /*销量*/
                 case :return;break;
                 case :Isaveflag(L);break;
                 }
                 getchar();
             }
         }
     }
 }
 void Sea_goods(Link L,char s[])
 {
     if (!L->next)
     {
         system("cls");
         printf("\n***没有货物记录，不能进入查询功能***\n");
         return ;
     }
     else
     {
         system("cls");
         for (;;)
         {
             Menu_Sea();
             switch(select(,))
             {
             case :Sea_by_name(L,s);break;
             case :Sea_by_num(L,s);break;
             case :return;break;
             case :Isaveflag(L);break;
             }
             getchar();
         }
     }
 }
 void Del_goods(Link L)
 {
     if (!L->next)
     {
         system("cls");
         printf("\n***没有货物记录，不能使用删除功能***\n");
         return ;
     }
     else
     {
         system("cls");
         for (;;)
         {
             Menu_del();
             switch (select(,))
             {
             case :Del_by_name(L);break;
             case :Del_by_num(L);break;
             case :return;break;
             case :Isaveflag(L);break;
             }
             getchar();
         }
     }
 }
 void main_zg(Link L)                        /*主管功能*/
 {
     system("cls");
     for (;;)
     {
         Menu_zg();
         switch (select(,))
         {
         case :Add_goods(L);saveflag=;break;                 /*增加货物信息*/
         case :Del_goods(L);break;                 /*删除学生信息*/
         case :Sea_goods(L,zg);break;         /*按编号名字查询*/
         case :system("cls");Disp(L,zg);break;
         case :Dz_by_data(L);break;
         case :Buhuo(L);break;
         case :Disp(L,zg);Sum_Income(L);Disp(L,zg);break;
         case :Sort_goods(L,zg);break;
         case :Wb_Save(L);Er_Save(L);break;
         case :return;break;
         case :Isaveflag(L);break;
         }
         getchar();
     }
 }
 void main_pt(Link L)                        /*普通功能*/
 {
     system("cls");
     for (;;)
     {
         Menu_pt();
         switch (select(,))
         {
         case :Sea_goods(L,pt);break;         /*按编号名字查询*/
         case :system("cls");Disp(L,pt);break;
         case :Sort_goods(L,pt);break;
         case :return;break;
         case :Isaveflag(L);break;
         }
         getchar();
         system("cls");
     }
 }
 int main()
 {
     Link L;
     FILE *in;
     Node *p,*r;
     int count=;
     L=(Node *)malloc(sizeof(Node));
     L->next=NULL;
     r=L;
     if ((in=fopen("d:\\Goods","ab+"))==NULL) /*以追加方式打开二进制文件*/
     {
         printf("\n***打开文件失败***\n");
         exit();
     }
     while (!feof(in))
     {
         p=(Node *)malloc(sizeof(Node));
         if (fread(p,sizeof(Node),,in))
         {
             p->next=r->next;
             r->next=p;
             count++;
         }
     }
     fclose(in);
     for (;;)
     {
         Menu_Qx();
         switch (select(,))
         {
         case :if(IsPassword())
                {
                    main_zg(L);
                }
                break;
         case :main_pt(L);break;
         case :Isaveflag(L);break;
         }
         getchar();
     }
     return ;
 }