超市管理系统课程设计源码C++

短小精炼

#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 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;

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