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#include<stdio.h>
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#include<stdlib.h>
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#include<string.h>
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typedef struct
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{
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char id[10]; //序号
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char name[20]; //名字
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char xinghao[10];//型号
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int price; //价格
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char from[20]; //产地
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int cun; //存货
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int yiding; //已定数
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}shop;
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typedef struct
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{
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char place[20]; //客户地址
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char call[15]; //客户电话
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char thing[20]; //购买的物品
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}info;
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void buy();
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void present_all();
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void present_kehu();
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int main(){
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printf("------商店管理系统------\n");
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printf("1.购买商品\n2.查询客户信息\n");
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printf("输入你需要的功能所代表的序号\n");
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int pok; scanf("%d",&pok);
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switch(pok)
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{
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case 1:
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system("cls");
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buy(); break;
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case 2:
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present_kehu(); break;
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}
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return 0;
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}
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void buy()
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{
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FILE *p,*q,*z;
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char name[20];
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int num;
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info kehu;
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if((p=fopen("商品信息.txt","r"))==NULL)
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{
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printf("open erro 25"); exit(0);
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}
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if((q=fopen("商品数量.txt","r"))==NULL)
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{
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printf("open erro 35"); exit(0);
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}
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if((z=fopen("客户信息.txt","a"))==NULL)
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{
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printf("erro45"); exit(0);
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}
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fscanf(q,"%d",&num);
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printf("------商店购买系统-------\n");
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printf("本店已有商品如下\n");
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present_all();
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printf("\n");
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printf("请输入你要购买的商品名称或编号\n");
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scanf("%s",name);
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system("cls");
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shop x[50];
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for(int i=0;i<num;i++)
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{
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fscanf(p,"%s%s%s%d%s%d%d",&x[i].id,&x[i].name,&x[i].xinghao,&x[i].price,&x[i].from,&x[i].cun,&x[i].yiding);
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}
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//输入数据//
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for(int i=0;i<num;i++)
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{
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if(strcmp(name,x[i].id)==0||strcmp(name,x[i].name)==0)
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{
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if(x[i].cun==0)
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{
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printf("对不起，您要买的商品已经没有库存了\n");
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break;
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}
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printf("您购买的商品的信息为:\n");
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printf("编号：%s\n名字：%s\n型号：%s\n价格：%d\n产地:%s\n存货：%d\n已订:%d\n",x[i].id,x[i].name,x[i].xinghao,x[i].price,x[i].from,x[i].cun,x[i].yiding);
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printf("你是否要订购此商品？确定输入1，否输入2\n");
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int kk;
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scanf("%d",&kk);
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switch(kk)
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{
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case 1:
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system("cls");
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printf("请输入你的地址信息\n");
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scanf("%s",kehu.place);
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printf("请输入你的电话信息\n");
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scanf("%s",kehu.call);
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fprintf(z,"\n%s %s %s",kehu.place,kehu.call,x[i].name);
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printf("订购成功\n");
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x[i].cun--;//存-1
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x[i].yiding++;//已定+1
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fclose(p);
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if((p=fopen("商品信息.txt","w"))==NULL) // 重置//
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{
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printf("open erro 25"); exit(0);
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}
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for(int k=0;k<num;k++)
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{
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fprintf(p,"%s %s %s %d %s %d %d\n",x[k].id,x[k].name,x[k].xinghao,x[k].price,x[k].from,x[k].cun,x[k].yiding);
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}
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printf("你是否还要购买其他的产品？\n1.是\n2.不是\n");
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int kkk;scanf("%d",&kkk);
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switch(kkk)
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{
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case 1:
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fclose(p);
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fclose(q);
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fclose(z);
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buy();
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break;
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default:printf("欢迎您下次继续加购\n");
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}
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break;
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default:system("cls");printf("欢迎您下次继续光临\n");break;
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}
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break;
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}
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if(i==num-1) printf("没有查到此商品\n");
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}
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fclose(p);
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fclose(q);
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fclose(z);
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}
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void present_all()//展示商品信息//
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{
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FILE *p,*q;
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int num;
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if((p=fopen("商品信息.txt","r"))==NULL)
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{
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printf("open erro 25"); exit(0);
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}
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if((q=fopen("商品数量.txt","r"))==NULL)
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{
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printf("open erro 35"); exit(0);
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}
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fscanf(q,"%d",&num);
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shop x[50];
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for(int i=0;i<num;i++)
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{
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fscanf(p,"%s%s%s%d%s%d%d",&x[i].id,&x[i].name,&x[i].xinghao,&x[i].price,&x[i].from,&x[i].cun,&x[i].yiding);
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printf("编号：%2s 名字：%6s 型号：%3s 价格：%3d 产地：%s 存货：%d 已定：%d\n",x[i].id,x[i].name,x[i].xinghao,x[i].price,x[i].from,x[i].cun,x[i].yiding);
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}
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fclose(p);
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fclose(q);
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}
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void present_kehu() //展示客户信息//
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{
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FILE *p;
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system("cls");
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printf("-------全部客户信息-------\n");
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if((p=fopen("客户信息.txt","r"))==NULL)
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{
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printf("erro 169"); exit(0);
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}
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info x;
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while((fscanf(p,"%s%s%s",&x.place,&x.call,&x.thing))!=EOF)
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printf("地址：%s 电话：%s 商品：%s\n",x.place,x.call,x.thing);
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fclose(p);
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}
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