超市管理系统课程设计源码C--.doc

// supermarket.cpp : Defines the entry point for the console application.
//

//#include "stdafx.h"

//
// int main(int argc, char* argv[])
// {
// return 0;
// }

#include<iostream.h>

#include<fstream.h>

#include<ctype.h>

#include<stdlib.h>

#include<string.h>

int n=0; //全局数据,结点数量

class Goods

{

protected:

char name[20]; //商品名称

double num; //商品代码

char address[30]; //商品产地

int price; //商品单价

double count; //该类商品库存量

Goods *next;

public:

Goods(double num,char*name,char*address,int price,double count)

{

this->num=num;

strcpy(this->name,name);

strcpy(this->address,address);

this->price=price;

this->count=count;

}

void Output()

{

cout<<"num:"<<num<<" name:"<<name<<" address:"<<address

<<" price:"<<price<<" count:"<<count<<endl;

}

friend class Supermarket;

};

class Supermarket

{

private:

Goods *goods; //商品表

void Clear(); //清除内存中数据

public:

Supermarket()

{

goods=NULL;

Load();

}

~Supermarket()

{

Goods*p;

p=goods;

while(p)

{

p=p->next;

delete goods;

goods=p;

}

goods=NULL;

}

void Add(); //增加商品

void Delete(); //删除商品

void Modify(); //修改商品

void Query(); //查询商品

void Add_up(); //统计商品

void Save(); //基础数据存盘

void Load(); //基础数据装入

void good_initial( double num,double count,char name[20],char address[30],int price); //物品初始化

};

void Supermarket::Clear() //清除内存中商品数据（内部使用）

{

Goods* p;

p=goods;

while(p)

{

goods=p->next;

delete p;

p=goods;

}

}

void Supermarket::Add()

{

Goods *p;

double num,count;

char name[20],address[30];

int price;

cout<<"\n请输入新增商品信息：\n";

cout<<"商品代码:";cin>>num;

cout<<"商品名称:";cin>>name;

cout<<"商品产地:";cin>>address;

cout<<"商品单价:";cin>>price;

cout<<"该商品库存量:";cin>>count;

//创建新商品类结点

p=new Goods(num,name,address,price,count);

p->next=NULL;

if(goods==NULL)

{

goods=p;

n++;

}

else

{

Goods *p2=goods;

while(p2->next)

p2=p2->next;

p2->next=p;

n++;

}

}

void Supermarket::good_initial( double num,double count,char name[20],char address[30],int price)

{

Goods *p;

//创建新商品类结点

p=new Goods(num,name,address,price,count);

p->next=NULL;

if(goods==NULL)

{

goods=p;

n++;

}

else

{

Goods *p2=goods;

while(p2->next)

p2=p2->next;

p2->next=p;

n++;

}

}

void Supermarket::Delete() //删除商品

{

char name[20];

cout<<"\n请输入要删除的商品名称:\n";

cin>>name;

//查找要删除的结点

Goods *p1,*p2; p1=goods;

while(p1)

{

if(strcmp(p1->name,name)==0) break;

else

{

p2=p1;

p1=p1->next;

}

}

//删除结点

if(p1!=NULL) //若找到结点，则删除

{

if(p1==goods) //若要删除的结点是第一个结点

{

goods=p1->next;

delete p1;

n--;

}

else //若要删除的结点是后续结点

{

p2->next=p1->next;

delete p1;

n--;

}

cout<<"找到并删除\n";

}

else //未找到结点

cout<<"Sorry,未找到!\n";

}

void Supermarket::Modify() //修改商品信息

{

double num,count;

char name[20],address[30];

int price;

cout<<"\n 修改商品，请输入要查的商品名称：\n";

cout<<"Name:"; cin>>name;

//查找要修改的结点

Goods *p1,*p2; p1=goods;

while(p1)

{

if(strcmp(p1->name,name)==0) break;

else

{

p2=p1;

p1=p1->next;

}

}

//修改结点

if(p1!=NULL) //若找到结点

{

p1->Output();

cout<<"\n请选择要修改的信息（1—商品代码，2—商品名称，3—产地，4—单价，5—该商品库存量，6—修改全部信息）:\n";

int a; cin>>a;

switch(a)

{

case 1:cout<<"请输入新代码："; cin>>num;

strcpy(name,p1->name);strcpy(address,p1->address);price=p1->price;count=p1->count; break;

case 2:cout<<"请输入新名称："; cin>>name;

num=p1->num;strcpy(address,p1->address);price=p1->price;count=p1->count; break;

case 3:cout<<"请输入新产地："; cin>>address;

num=p1->num;strcpy(name,p1->name);price=p1->price;count=p1->count; break;

case 4:cout<<"请输入新单价："; cin>>price;

num=p1->num;strcpy(name,p1->name);strcpy(address,p1->address);count=p1->count; break;

case 5:cout<<"请输入新库存数据："; cin>>count;

num=p1->num;strcpy(name,p1->name);strcpy(address,p1->address);price=p1->price; break;

case 6:cout<<"请输入新信息：\n";

cout<<"商品代码:"; cin>>num;

cout<<"商品名称:"; cin>>name;

cout<<"商品产地:"; cin>>address;

cout<<"商品单价:"; cin>>price;

cout<<"该商品库存量:"; cin>>count; break;

}

//创建新商品结点

Goods *p3;

p3=new Goods(num,name,address,price,count);

//员工结点替换到链表

p3->next=p1->next;

if(p1==goods) //若要替换的结点是第一个结点

goods=p3;

else //若要替换的结点是后续结点

p2->next=p3;

delete p1; //删除原来的商品结点

cout<<"修改成功!\n";

}

else //未找到结点

cout<<"Sorry,未找到!\n";

}

void Supermarket::Query()

{

cout<<"\n****查询商品****\n";

char name[20];

cout<<"\n请输入要查询的商品名称：\n";

cin>>name;

Goods *p1=goods;

while(p1)

{

if(strcmp(p1->name,name)==0) break;

else p1=p1->next;

}

if(p1!=NULL) //若找到结点

{

cout<<"\n要查询的信息如下：\n";

cout<<"该类商品代码:\t"<<p1->num<<"\t"<<"该类商品名称:\t"<<p1->name<<"\t\n";

cout<<"该类商品产地:\t"<<p1->address<<"\t"<<"该类商品单价:\t"<<p1->price<<"\t\n";

cout<<"该类商品库存量:\t"<<p1->count<<"\t";

}

else //未找到结点

cout<<"\nSorry,未找到该类商品!\n";

}

void Supermarket::Add_up() //统计超市商品总数量于价值

{

cout<<"\n****商品统计****\n";

double Amount=0,Value=0;

char name[20];

cout<<"\n请输入要统计的商品名称：\n";

cin>>name;

Goods *p1;

p1=goods;

while(p1)

{

if(strcmp(p1->name,name)==0) break;

else p1=p1->next;

}

if(p1)

{

while(p1)

{

Amount+=p1->count;

Value+=p1->count*p1->price;

p1=p1->next;

}

cout<<"商品总数量是：\n";

cout<<Amount;

cout<<"\n商品总价值是：\n";

cout<<Value;

}

else

cout<<"\nSorry,未找到该类商品!\n";

}

void Supermarket::Save() //数据存盘

{

cout<<"是否保存？[Y/N]";

char a;

cin>>a;

if(a=='n')return;

if(a=='y'||a=='Y')

{

ofstream outfile("base.txt",ios::out);

if(!outfile){cerr<<"open error!";exit(1);}

Goods* p;p=goods;

while(p)

{

outfile<<"商品代码\t\t"<<p->num<<endl;

outfile<<"商品名称\t\t"<<p->name<<endl;

outfile<<"商品产地\t\t"<<p->address<<endl;

outfile<<"商品单价\t\t"<<p->price<<endl;

outfile<<"该商品库存量\t"<<p->count<<endl;

cout<<endl;

p=p->next;

}

outfile.close();

cout<<"已完成数据的保存\n";

}

}

void Supermarket::Load() //数据装入

{

Goods *p=goods;

ifstream infile("base.txt",ios::in|ios::nocreate);

//读一条信息

infile>>p->num>>p->name>>p->address>>p->price>>p->count;

while(infile.good())

{

//创建商品结点

p=new Goods(p->num,p->name,p->address,p->price,p->count);

p->next=NULL;

//商品结点加入

if(goods) //若已存在结点

{

Goods*p2;

p2=goods;

while(p2->next) //查找尾结点

p2=p2->next;

p2->next=p; //连接

}

else //表空

goods=p; //连接

//读下一条信息

infile>>p->num>>p->name>>p->address>>p->price>>p->count;

}

cout<<"\n商品数据已经装入\n";

}

int main()

{

char c;

Supermarket a;
a.good_initial(1.0,100,"yili","内蒙古",3);
a.good_initial(1.0,100,"beer","山东",3);
a.good_initial(2.0,50,"pc","北京",5000);
do{

cout<<"\n****超市进销存管理系统****\n";

cout<<" 1—增加商品\n";

cout<<" 2—删除商品\n";

cout<<" 3—修改商品\n";

cout<<" 4—查询商品\n";

cout<<" 5—统计商品\n";

cout<<" 6—退出 \t 请选择（1—6）:";

cin>>c;

switch(c)

{

case '1':a.Add();

a.Save();break;

case '2':a.Load();

a.Delete();

a.Save();break;

case '3':a.Load();

a.Modify();

a.Save();break;

case '4':a.Load();

a.Query(); break;

case '5':a.Load();

a.Add_up();break;

}

}while(c!='6');

return 0;

}