renshiguanli.cpp

设计一个人事管理系统程序

#include<iostream.h>
#include<string.h>
#include<iomanip.h>
#include<fstream.h>
#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
int k=1,i;                     //定义一个标志变量
class birthday{                    //定义出生年月日类
public:
	int year;
	int month;
	int day;
};

class people{                      //声明人员基类，以后在这个基础上派生出其它类  
public:
	people(){}
	virtual void enter();                         //虚基函数，搭成一个框架，以后在此基础上扩充
	virtual void display();
	virtual int get_no(){return number;}
	virtual char * get_name(){return name;}
	virtual void change_infor(){}                       //信息修改函数
	virtual void readfile(){}                      //从文件中读
	virtual void write(){}                       //将信息写入文件
	people operator = (people p1);                     //运算符重载
	int operator == (people p1);
	virtual ~people(){};
protected:
	char name[12];
	int number;
	char sex;
	birthday bir;
	char id[15];
};

people people::operator =(people p1){            //定义运算符重载
	strcpy(name,p1.name); number=p1.number; sex=p1.sex; bir.day=p1.bir.day; 
	bir.month=p1.bir.month; bir.year=p1.bir.year; 
	strcpy(id,p1.id);
	return p1;
}

int people::operator ==(people p1){
	if(id==p1.id)  return 1;
	else return 0;
}

void people::enter(){                    //定义信息输入函数
	cout<<"输入姓名："; cin>>name;
	cout<<"输入编号："; cin>>number;
	cout<<"输入性别："; cin>>sex;
	cout<<"生日是(年 月 日)："; cin>>bir.year>>bir.month>>bir.day;
	cout<<"身份证号：";cin>>id;
}

void people::display(){                  //定义信息显示函数
	cout<<setw(8)<<"姓名"<<setw(8)<<"编号"<<setw(8)<<"性别"<<setw(8)<<"出生日期"<<setw(8)<<"身份证号"<<endl;
	cout<<setw(8)<<name<<setw(8)<<number<<setw(8)<<sex<<setw(8)<<bir.year<<setw(8)<<bir.month<<setw(8)<<bir.day<<setw(8)<<id<<endl;
}

class student:virtual public people{              //以公有方式派生出学生类
protected:
	char classnumber[20];
public:
	student(){}
	 virtual void enter(){people::enter();cout<<"输入班级名称：";cin>>classnumber;}
	 virtual void display();
     virtual void readfile();
	 virtual void write();
	 virtual void change_infor();
	 virtual ~student(){};
};

class teacher:virtual public people{                 //以公有方式派生出老师类
protected:
	char principalship[16];
	char department[16];
public:
	teacher(){}
	virtual void enter(){people::enter();cout<<"输入老师的职务：";cin>>principalship;cout<<"\n输入老师所在的部门：";cin>>department;}
	virtual void display();
	virtual void readfile();
	virtual void write();
	virtual void change_infor();
	virtual ~teacher(){}
};

class graduate:virtual public student{            //以公有方式派生出研究生类
protected:
	char subject[16];
	teacher adviser;
public:
	graduate(){};
	virtual void enter(){student::enter();cout<<"输入研究生的专业：";cin>>subject;cout<<"输入导师的情况："<<endl;adviser.enter();}
	virtual void display();
	virtual void readfile();
	virtual void write();
	virtual void change_infor();
	virtual ~graduate(){};
};

class teacher_asistant:public teacher,public graduate{              //以公有方式派生出助教类
public:
	teacher_asistant(){};
	virtual void enter(){graduate::enter();cout<<"请输入助教生所在职务:";cin>>principalship;cout<<"请输入所在部门:";cin>>department;}
	virtual void display();
	virtual void readfile();
	virtual void write();
	virtual void change_infor();
	virtual ~teacher_asistant(){}
};

void student::display(){                     //定义派生类学生的信息显示函数
	cout<<setw(8)<<"姓名"<<setw(8)<<"编号"<<setw(5)<<"性别"<<setw(12)<<"出生日期"<<setw(12)<<"身份证号"<<setw(12)<<"班级名称"<<endl;
	cout<<setw(8)<<name<<setw(8)<<number<<setw(5)<<sex<<setw(4)<<bir.year<<setw(4)<<bir.month<<setw(4)<<bir.day<<setw(10)<<id<<setw(12)<<classnumber<<endl;
}

void student::write(){                        //定义派生类学生的信息写入文件函数
	student stu;
	char ch;
	ofstream myfile("student.txt",ios::app);
	do{
	stu.enter();
	myfile.write((char *)&stu,sizeof(stu));
	cout<<"还需要输入下个学生的信息吗(y/n):";
	cin>>ch;}while(ch=='y'||ch=='Y');
	myfile.close();
}

void student::readfile(){                  //定义派生类学生的读文件函数
	ifstream myfile("student.txt",ios::nocreate);
	while(myfile){
		student stu;
		if(myfile.read((char*)&stu,sizeof(stu))){
			if(stu.number!=-1)              //删除一个学生的信息，通过不显示来定义删除
				stu.display();
		}
	}
	myfile.close();
}

void student::change_infor(){                 //定义派生类学生的信息修改函数
	student stu;
	int num,p;
	cout<<"请输入你要修改或者删除的学生的编号：";
	cin>>num;
	fstream myfile("student.txt",ios::in|ios::out);
	while(myfile.good()){
		myfile.read((char*)&stu,sizeof(stu));
		if(num==stu.number){
			myfile.seekg(-sizeof(stu),ios::cur);
			cout<<"你是要修改还是要删除该学生的记录(1:删除 2:修改):";
			cin>>p;
			if(p==1){stu.number=-1;break;}
			else {
				cout<<"请输入新的信息"<<endl;
				stu.enter();break;	
			}
		}	
	}
	myfile.write((char *)&stu,sizeof(stu));
	myfile.close();
}

void teacher::display(){
	cout<<setw(8)<<"姓名"<<setw(8)<<"编号"<<setw(5)<<"性别"<<setw(12)<<"出生日期"<<setw(12)<<"身份证号"<<setw(10)<<"职务"<<setw(10)<<"部门"<<endl;
	cout<<setw(8)<<name<<setw(8)<<number<<setw(5)<<sex<<setw(4)<<bir.year<<setw(4)<<bir.month<<setw(4)<<bir.day<<setw(12)<<id<<setw(10)<<principalship<<setw(10)<<department<<endl;
}

void teacher::readfile(){
	ifstream myfile("teacher.txt",ios::nocreate);
	while(myfile){
		people *p;
		teacher tec;p=&tec;
		if(myfile.read((char*)&tec,sizeof(tec))){
			if(tec.number!=-1)
				p->display();
		}
	}
	myfile.close();
}

void teacher::write(){
	teacher tec;
	char ch;
	ofstream myfile("teacher.txt",ios::app);
	do{
	tec.enter();
	myfile.write((char *)&tec,sizeof(tec));
	cout<<"还需要输入下个学生的信息吗(y/n):";
	cin>>ch;}while(ch=='y'||ch=='Y');
	myfile.close();
}

void teacher::change_infor(){
    teacher tec;
	int num,p;
	cout<<"请输入你要修改或者删除的老师的编号：";
	cin>>num;
	fstream myfile("teacher.txt",ios::in|ios::out);
	while(myfile.good()){
		myfile.read((char*)&tec,sizeof(tec));
		if(num==tec.number){
			myfile.seekg(-sizeof(tec),ios::cur);
			cout<<"你是要修改还是要删除该老师的记录(1:删除 2:修改):";
			cin>>p;
			if(p==1){tec.number=-1;break;}
			else {
				cout<<"请输入新的信息"<<endl;
				tec.enter();break;	
			}
		}	
	}
	myfile.write((char *)&tec,sizeof(tec));
	myfile.close();
}

void graduate::display(){
    cout<<setw(8)<<"姓名"<<setw(8)<<"编号"<<setw(5)<<"性别"<<setw(12)<<"出生日期"<<setw(8)<<"身份证号"<<setw(8)<<"班级名称"<<setw(10)<<"专业"<<endl;
	cout<<setw(8)<<name<<setw(8)<<number<<setw(5)<<sex<<setw(4)<<bir.year<<setw(4)<<bir.month<<setw(4)<<bir.day<<setw(8)<<id<<setw(8)<<classnumber<<setw(10)<<subject<<endl;
	cout<<"他的导师的情况是："<<endl;
	adviser.display();
}

void graduate::readfile(){
	ifstream myfile("graduate.txt",ios::nocreate);
	while(myfile){
		people *p;
		graduate gra;p=&gra;
		if(myfile.read((char*)&gra,sizeof(gra))){
			if(gra.number!=-1)
				p->display();
		}
	}
	myfile.close();
}

void graduate::write(){
    graduate gra;
	char ch;
	ofstream myfile("graduate.txt",ios::app);
	do{
	gra.enter();
	myfile.write((char *)&gra,sizeof(gra));
	cout<<"还需要输入下个研究生的信息吗(y/n):";
	cin>>ch;}while(ch=='y'||ch=='Y');
	myfile.close();
}

void graduate::change_infor(){
    graduate gra;
	int num,p;
	cout<<"请输入你要修改或者删除的研究生的编号：";
	cin>>num;
	fstream myfile("graduate.txt",ios::in|ios::out);
	while(myfile.good()){
		myfile.read((char*)&gra,sizeof(gra));
		if(num==gra.number){
			myfile.seekg(-sizeof(gra),ios::cur);
			cout<<"你是要修改还是要删除该研究生的记录(1:删除 2:修改):";
			cin>>p;
			if(p==1){gra.number=-1;break;}
			else {
				cout<<"请输入新的信息"<<endl;
				gra.enter();break;	
			}
		}	
	}
	myfile.write((char *)&gra,sizeof(gra));
	myfile.close();
}

void teacher_asistant::display(){
 cout<<setw(8)<<"姓名"<<setw(8)<<"编号"<<setw(5)<<"性别"<<setw(12)<<"出生日期"<<setw(12)<<"身份证号"<<setw(8)<<"班级名称"<<setw(10)<<"专业"<<setw(10)<<"职务"<<setw(10)<<"部门"<<endl;
	cout<<setw(8)<<name<<setw(8)<<number<<setw(5)<<sex<<setw(4)<<bir.year<<setw(4)<<bir.month<<setw(4)<<bir.day<<setw(8)<<id<<setw(8)<<classnumber<<setw(10)<<subject<<setw(10)<<principalship<<setw(10)<<department<<endl;
	cout<<"他的导师的情况是："<<endl;
	adviser.display();
}

void teacher_asistant::readfile(){
	ifstream myfile("tec_asistant.txt",ios::nocreate);
	while(myfile){
		people *p;
		teacher_asistant tec_asis;p=&tec_asis;
		if(myfile.read((char*)&tec_asis,sizeof(tec_asis))){
			if(tec_asis.number!=-1)
				p->display();
		}
	}
	myfile.close();
}

void teacher_asistant::write(){
    teacher_asistant tec_asis;
	char ch;
	ofstream myfile("tec_asistant.txt",ios::app);
	do{
	tec_asis.enter();
	myfile.write((char *)&tec_asis,sizeof(tec_asis));
	cout<<"还需要输入下个助教生的信息吗(y/n):";
	cin>>ch;}while(ch=='y'||ch=='Y');
	myfile.close();
}

void teacher_asistant::change_infor(){
    teacher_asistant tec_asis;
	int num,p;
	cout<<"请输入你要修改或者删除的助教生的编号：";
	cin>>num;
	fstream myfile("tec_asistant.txt",ios::in|ios::out);
	while(myfile.good()){
		myfile.read((char*)&tec_asis,sizeof(tec_asis));
		if(num==tec_asis.number){
			myfile.seekg(-sizeof(tec_asis),ios::cur);
			cout<<"你是要修改还是要删除该助教生的记录(1:删除 2:修改):";
			cin>>p;
			if(p==1){tec_asis.number=-1;break;}
			else {
				cout<<"请输入新的信息"<<endl;
				tec_asis.enter();break;	
			}
		}	
	}
	myfile.write((char *)&tec_asis,sizeof(tec_asis));
	myfile.close();
}

void menu()
{ 
	cout<<"\t     *******************************************************"<<endl;
	cout<<"\n\n\t\t**************************************************"<<endl;
	cout<<"\t\t*\t     !!!欢迎进入人事管理系统!!!\t         *"<<endl;
	cout<<"\t\t*------------------------------------------------*"<<endl;
	cout<<" \t\t*   1.人事信息录入      2.显示人事信息   *"<<endl;
	cout<<" \t\t*   3.信息的修改或删除   4.返回主菜单   0.退出*"<<endl;
	cout<<"\t\t**************************************************"<<endl;
	cout<<" \t\t\t\t请选择操作(0=======4) "<<endl;
	cout<<"\t\t\t\t   请选择：";
}

void select(){
	people *pt;student st; teacher te; graduate gr; teacher_asistant t_a;
	if(i==1) pt=&st;
	else if(i==2) pt=&gr;
	else if(i==3) pt=&te;
	else if(i==4) pt=&t_a;
	do{
	int ch; 
	cin>>ch;
	switch(ch){
	case 0:exit(0);
	case 1:pt->write();cout<<"你还想进行何种操作：";break;
	case 2:pt->readfile();cout<<"你还想进行何种操作：";break;
	case 3:pt->change_infor();cout<<"你还想进行何种操作：";break;
	case 4:k=0;break;
	default:cout<<"你的选择错误，请重新选择：";break;
	}}while(k);
}

void main(){
b:
    cout<<"\t     *******************************************************"<<endl;
	cout<<"\n\n\t\t**************************************************"<<endl;
	cout<<"\t\t*\t     !!!欢迎进入人事管理系统!!!\t         *"<<endl;
	cout<<"\t\t*------------------------------------------------*"<<endl;
    cout<<"\t\t*       1:学生                                   *"<<endl;
	cout<<"\t\t*       2:研究生                                 *"<<endl;
	cout<<"\t\t*       3:教师                                   *"<<endl;
	cout<<"\t\t*       4:助教                                   *"<<endl;
	cout<<"\t\t*       0:退出                                   *"<<endl;
	cout<<"                **************************************************"<<endl;
	cout<<"请选择(0---4):";
	cin>>i;
	switch(i){
	case 0:cout<<"你已经退出系统，欢迎你再次使用。";getch();exit(0);
	case 1:{system("cls");menu();select();break;}
	case 2:{system("cls");menu();select();break;}
	case 3:{system("cls");menu();select();break;}
	case 4:{system("cls");menu();select();break;}
	default :cout<<"不好意思，你的选择错误，请重新选择：";break;
	}
	if(k==0)
		k=1;
	system("cls");
	goto b;
}