实验设备管理系统设计__C++源代码

源代码#include <iostream>#include <cstdlib>#include <string>#include <fstream>#include <sstream>using namespace std;class Node //结点类，用于存放客户的各种信息{publiclong id; //实验设备编号string name; //名称string type //随便类型string suoshushiyanshi; //实验设备所属实验室string buytime; //购买时间string price; //价格string amount; //库存量string shengchanriqi; //生产日期string shiyongshouming; //使用寿命string weight; //重量Node *next; //指向下一结点的指针Node(long id=000,string nname="noname",string ntype="unkown".string nsuoshushiyanshi="unknow",string nbuytime="unknow",string nprice="unknow",string namount="unknow",string nshengchanriqi="unkown",string nshiyongshouming="unknow",string nweight="unknow");//构造函数，初始化变量};class Link//Link 类，把数据以链表的形式存储，链表的每个结点为一个Node对象{private:Node *head;//链表的头指针，为Node对象类型的指针public:Link();//构造函数，初始化变量bool link IsEmpty();//判断链表是否为空void linkInsert(Node *newnode);//向链表中插入新的结点bool linkDelete(int nid);//从链表中删除的结点void linkClear();//清空链表中数据void linkView();//查看链表中数据Node* linkFind(int nid);//在链表中查找id为nid结点，返回指向该结点的指针Node* getHead();//获取头指针};Node::Node(long nid,string nname,string ntype,string nsuoshushiyanshi,string nbuytime,string nprice,string namount,string nshengchanriqi,string nshiyongshouming,string nweight){id=nid;name=nname;type=ntypesuoshushiyanshi=nsuoshushiyanshi;buytime=nbuytime;price=nprice;amount=namount;shengchanriqi=nshengchanriqi;shiyongshouming=nshiyongshouming;weight= nweight;next=NULL;}Link::Link() //构造函数，初始化链表为空{head=NULL;}bool Link::linkIsEmpty() //判断链表是否为空，空则返回true{return(head==NULL);}void Link::linkInsert(Node *newnode)//按id值从小到大的顺序，插入新的结点{Node *pl;if(!head)//链表为空的情况head=newnode;else if((head->id)>(newnode->id))//插入到第一个结点的情况{newnode->next=head;head=newnode;}else//插入到第二个及以后情况{pl=head;while(1){if(!(pl->next)){pl->next=newnode;break;}else if((pl->next)->id>newnode->id){newnode->next=pl ->next;pl ->next=newnode;break;}pl=pl ->next;}}}bool Link::linkDelete(int nid)//删除结点，成功则返回true {Node *p;if(head==NULL)//链表为空的情况return false;if(head->id==nid)//删除的为第一个结点的情况{head=head->next;return true}p=head;while(p->next)//删除的为第二个及以后的情况{if((p->next)->id==nid){p->next=(p->next)->next;return true;}p=p->next;}return false;}void Link::linkClear()//清空链表{head=NULL;}Node* Link::linkFind(int nid)//查找id 值为nid的结点，返回该结的的指针{Node *p=head; //没找到符合条件的结点的话，返回的指针值为NULL while(p){if(p->id==nid)break;elsep=p->next;}return p;}void Link::linkView()//显示链表数据{Node *p=head;while(p){cout<<"实验设备编号:"<<p->id<<endl;cout<<"名称:"<<p->name<<endl;cout<<"类型:"<<p->type<<endl;cout<<"所属实验室:"<<p->suoshushiyanshi<<endl;cout<<"购买时间:"<<p->buytime<<endl;cout<<"价格:"<<p->price<<endl;cout<<"库存量:"<<p->amount<<endl;cout<<"生产日期:"<<p->shenchanriqi<<endl;cout<<"使用寿命:"<<p->shiyongshouming<<endl;cout<<"重量:"<<p->weight<<endl;cout<<"*******************************************************"<<endl;p=p->next;}}Node* Link::getHead(){return head;}//类Shebei，用于包装Link类及菜单操作class Shebei{private:Link clink;//Link 对象成员bool k;//记录数据是否被修改public:Shebei();void ShebeiClear();void ShebeiInsert();void ShebeiDelete();void ShebeiFind();void ShebeiModify();void ShebeiView();void ShebeiLoad();void ShebeiSave();void Exit();//退出程序void showMenu();//显示菜单void showTip();//显示操作提示void doMenu(char n);//执行相应菜单项功能};Shebei:: Shebei(){Link();//调用成员对象的构造函数ShebeiLoad();从文件中读取数据，创建链表k=false;//设置数据被修改}void Shebei::ShebeiClear()//清空设备记录{clink.linkClear();cout<<"成功清空设备信息记录！"<<endl;}void Shebei::ShebeiInsert()//插入设备记录{Node *p=new Node();cout<<"请输入设备编号：";cin>>p->id;cout<<"请输入名称：";cin>>p->name;cout<<"请输入类型：";cin>>p->type;cout<<"请输入所属实验室：";cin>>p->suoshushiyanshi;cout<<"请输入购买时间：";cin>>p->buytime;cout<<"请输入价格：";cin>>p->price;cout<<"请输入库存量：";cin>>p->amount;cout<<"请输入生产日期：";cin>>p->shengchanriqi;cout<<"请输入设备重量：";cin>>p->weight;if(!clink.linkFind(p->id))判断设备信息是否存在{clink.linkInsert(p);k=true;}elsecout<<"设备编号为"<<p->id<<"的设备已存在，插入失败! "<<endl; }void Shebei::ShebeiDelete()//删除设备记录{long i;if(clink.linkIsEmpty())//链表为空的情况cout<<"没有设备记录! "<<endl;else{cout<<"请输入设备编号：";cin>>i;if(clink.linkDelete(i)){cout<<"成功删除编号为"<<i<<"的实验记录!"<<endl;k=true;}elsecout<<"没有找到编号为"<<i<<"的设备!"<<endl;}}void Shebei::ShebeiFind()//查找某编号的设备记录{long n;Node *p;if(clink.linkIsEmpty())//链表为空的情况cout<<"没有设备记录!"<<endl;else{cout<<"请输入要查找的设备的编号：";cin>>n;p=clink.linkFind(n);//获得找到的结点的指针if(p)//指针值不为NULL时{cout<<"实验设备编号:"<<p->id<<endl;cout<<"名称:"<<p->name<<endl;cout<<"类型:"<<p->type<<endl;cout<<"所属实验室:"<<p->suoshushiyanshi<<endl;cout<<"购买时间:"<<p->buytime<<endl;cout<<"价格:"<<p->price<<endl;cout<<"库存量:"<<p->amount<<endl;cout<<"生产日期:"<<p->shengchanriqi<<endl;cout<<"使用寿命:"<<p->shiyongshouming<<endl;cout<<"重量:"<<p->weight<<endl;}else//指针值为NULL时cout<<"没有找到编号为"<<n<<"的设备记录!"<<endl;}}void Shebei::ShebeiModify()//修改某编号的设备信息{long n;Node *p;if(clink.linkIsEmpty())//链表为空的情况cout<<"没有设备记录!"<<endl;else{cout<<"请输入要修改的设备的编号：";cin>>n;p=clink.linkFind(n);//获得找到的结点的指针if(p)//指针值不为NULL时{cout<<"实验设备编号:"<<p->id<<endl;cout<<"名称:"<<p->name<<endl;cout<<"类型:"<<p->type<<endl;cout<<"所属实验室:"<<p->suoshushiyanshi<<endl;cout<<"购买时间:"<<p->buytime<<endl;cout<<"价格:"<<p->price<<endl;cout<<"库存量:"<<p->amount<<endl;cout<<"生产日期:"<<p->shengchanriqi<<endl;cout<<"使用寿命:"<<p->shiyongshouming<<endl;cout<<"重量:"<<p->weight<<endl;cout<<"请输入新的设备信息"<<endl;cout<<"请输入设备编号：";cin>>p->id;cout<<"请输入名称：";cin>>p->name;cout<<"请输入类型：";cin>>p->type;cout<<"请输入所属实验室：";cin>>p->suoshushiyanshi;cout<<"请输入购买时间：";cin>>p->buytime;cout<<"请输入价格：";cin>>p->price;cout<<"请输入库存量：";cin>>p->amount;cout<<"请输入生产日期：";cin>>p->shengchanriqi;cout<<"请输入设备重量：";cin>>p->weight;}else//指针值为NULL时cout<<"没有找到编号为"<<n<<"的设备记录! "<<endl;}}void Shebei::ShebeiView()//显示所有设备的记录{if(clink.linkIsEmpty())cout<<"没有设备记录! "<<endl;elseclink.linkView();}void Shebei::ShebeiLoad()//从文件中读入数据，创建链表{Node *p;long nid;ifstream infile("data.txt");if(!infile)cerr<<"错误：数据文件不能打开!\n";elsewhile(infile>>nid)//读取客户，直到读空{p=new Node();p->id=nid;infile>>p->name>>" "; //读取名称infile>>p->type>>" ";infile>>p->suoshushiyanshi>>" ";infile>>p->buytime>>" ";infile>>p->price>>" ";infile>>p->amount>>" ";infile>>p->shengchanriqi>>" ";infile>>p->weight>>" ";clink.linkInsert(p);}infile.close(); //关闭文件}void Shebei::ShebeiSave()//将数据保存到文件{Node *p=clink.getHead();ofstream outfile("data.txt");if(!outfile)cerr<<"错误：数据文件不能打开!\n";else{while(p){outfile<<p->id<<" "<<p->name<<" "<<p->type<<""<<p->suoshushiyanshi<<" "<<p->buytime<<" "<<p->price<<" "<<p->amount<<" "<<p->shengchanriqi<<" "<<p->weight<<" "<<endl;p=p->next;}k=false;cout<<"保存成功!"<<endl;}}void Shebei::Exit(){char s='Y';if(k)//判断数据是否修改{cout<<"数据已经改变，是否保存？(y/n)："cin>>s;if(s=='Y'lls=='Y')ShebeiSave();}cout<<"已安全退出，";system("pause");exit(0);}void Shebei::showMenu()cout<<"\t\t*********************************************"<<endl; cout<<"\t\t* 实验室设备管理系统*"<<endl;cout<<"\t\t* *"endl;cout<<"\t\t* 1--清除所有设备信息*"endl;cout<<"\t\t* *"endl;cout<<"\t\t* 2--添加：增加一个设备到设备信息中*"endl;cout<<"\t\t* *"endl;cout<<"\t\t* 3--删除：删除指定设备数据*"endl;cout<<"\t\t* *"endl;cout<<"\t\t* 4--查找：根据设备数据查找设备信息*"endl;cout<<"\t\t* *"endl;cout<<"\t\t* 5--修改：修改指定设备信息*"endl; cout<<"\t\t* *"endl; cout<<"\t\t* 6--显示：在屏幕上显示所有设备的消息*"endl; cout<<"\t\t* *"endl; cout<<"\t\t* 7--存储：将设备信息保存在一个文件中*"endl; cout<<"\t\t* *"endl; cout<<"\t\t* 0--退出：安全的退出本系统*"endl;cout<<"\t\t********************************************"endl;}void Shebei::showTip(){cout<<endl;cout<<"*****************操作完成***************"<<endl;cout<<"***************选择0--7继续************"<<endl;cout<<"请选择：";}void Shebei::doMenu(char n){switch(n){case'1':ShebeiClear();break;case'2':ShebeiInsert();break;case'3':ShebeiDelete();break;case'4':ShebeiFind();break;case'5':ShebeiModify();break;case'6':ShebeiView();break;case'7':ShebeiSave();break;case'0':Exit();break;default:cout<<"输入错误!";}}int main(){Shebei c;char i='9';c.showMenu();cout<<"欢迎来到实验室设备管理系统:"<<endl;cout<<"请选择你需要的服务:";while(1){cin>>i;system("cls"); //清除屏幕c.showMenu();c.doMenu(i);c.showTip();}return 0;}。