编程实现一个简单的大学人员管理程序，该程序可以管理大学的一些基本人员：学生、教师、职工。
首先设计一个抽象类person。通过该类保存人员的最基本信息：姓名（name）、年龄（age）和性别（sex）。然后使用该类派生出学生类、教师类和职工类，在其中添加各自的特性，如在学生类中添加如下信息：专业（speciality），在教师类中添加院系（department），在职工类中添加部门和职务等信息。为每个类定义一个输出函数print()，输出该类相关信息；定义学生顺序表类、教师顺序表类及职工顺序表类，可以对学生、教师、职工信息进行插入、删除、追加、查询、浏览所有信息、查询人数等操作。

#define _CRT_SECURE_NO_DEPRECATE
#include <iostream>
#include <string.h>
#include <fstream>
#include <cstring> 
using namespace std;
class student;
class studentlist;
class person
{
public:

	person() { strcpy(name, "XXX"); age = 0; sex = 'm'; }
	person(char nam[20], int ag, char se)
	{
		strcpy(name, nam); age = ag; sex = se;
	}
	person(person& p) { strcpy(name, p.name); age = p.age; sex = p.sex; }
	void print()
	{
		cout << "name=" << name << endl;
		cout << "age=" << age << endl;
		cout << "sex=" << sex << endl;
	}
	friend studentlist;         //
	friend student;           //
	char* getname() { return name; }
	int getage() { return age; }
	char getsex() { return sex; }
private:
	char name[20];
	int age;
	char sex;
};

class student :public person
{
	friend studentlist;
public:
	student() :person() { strcpy(speciality, "XXXXX"); }
	student(char nam[20], int ag, char se, char specia[50]) :person(nam, ag, se)
	{
		strcpy(speciality, specia);
	}
	student(student& s) :person(s) { strcpy(speciality, s.getspecia()); }   //
	void print()    //
	{
		person::print();
		cout << "speciality=" << speciality << endl;

	}
	char* getspecia() { return speciality; }
	void readFromFile(fstream& in)
	{
		char temp[30] = "";
		in.read(temp, 9);  temp[9] = '\0';   strcpy(name, temp);

		in.read((char*)&age, sizeof(int));
		in.read(temp, 2);   sex = temp[0];
		in.read(temp, 16); temp[16] = '\0';  strcpy(speciality, temp);

	};
	void writeToFile(fstream& out) const
	{
		char ssex[5];
		out.write(name, 9);       //假定登录名最多9个字符

		out.write((char*)&age, sizeof(int));
		ssex[0] = sex; ssex[1] = '\0';
		out.write(ssex, 2);
		out.write(speciality, 16);
	};

private:
	char speciality[50];
};

class teacher :public person
{
public:
	teacher() :person() { strcpy(department, "XXXXX"); }
	teacher(char nam[20], int ag, char se, char dep[50]) :person(nam, ag, se)
	{
		strcpy(department, dep);
	}
	teacher(teacher& t) :person(t) { strcpy(department, t.getdepart()); };    //
	void print()    //
	{
		person::print();
		cout << "department=" << department << endl;
	}
	char* getdepart() { return department; }
private:
	char department[50];
};



class employ :public person
{
public:
	employ() :person() { strcpy(department, "XXXXX"); strcpy(post, "XXX"); }
	employ(char nam[20], int ag, char se, char dep[50],char pos[30]) :person(nam, ag, se)
	{
		strcpy(department, dep); strcpy(post, pos);
	}
	employ(employ& e) :person(e) { strcpy(department, e.getdepart()); strcpy(post, e.getpost()); };   //
	void print()     //
	{
		cout << "department=" << department << endl;
		cout << "post=" << post << endl;

	}
	char* getdepart() { return department; }
	char* getpost() { return post; }
private:
	char department[50];
	char post[30];
};

class studentlist
{
public:
	studentlist() {   }
	void  insert(student& s, int r)   //
	{

		student temp;
		for (int i = num - 1; i >= r - 1; i--)
			ss[i + 1] = ss[i];
		ss[r - 1] = s;
		num++;

	}
	void dele(char nam[20])     //
	{
		int t = -1, i;
		for (i = 0; i < num; i++)
			if (strcmp(ss[i].getname(), nam) == 0)
			{
				t = i; break;
			}
		if (t >= 0 && t < num)
		{
			for (i = t; i < num; i++)
				ss[i] = ss[i + 1];
			cout << "delete!" << endl;
			num--;
		}
		else
			cout << "not delete!" << endl;

	}
	void locate(char nam[20])     //
	{
		int t = -1;
		for (int i = 0; i < num; i++)
			if (strcmp(ss[i].getname(), nam) == 0)
			{
				t = i; break;
			}
		if (t >= 0 && t < num)
		{

			cout << "Find!" << endl;

		}
		else
			cout << "not Find!" << endl;


	}
	void list()    //
	{
		for (int i = 0; i < num; i++)
		{
			cout << "no." << i + 1 << "student:" << endl;
			ss[i].print();
		}


	}
	void append(student& s)    //
	{
		ss[num] = s;
		num++;

	}
	void findnum() { cout << "num" << num << endl; }
	void readFromFile(const char* FileName)
	{
		fstream file(FileName, ios::in | ios::binary);
		if (!file)
		{
			cout << "   文件打开错误!" << endl;  abort();
		}
		else cout << "file open success" << endl;
		num = 0;
		while (!file.eof())
		{
			ss[num].readFromFile(file);  num++;
		}
		num--;
		cout << "num=" << num << endl;
		file.close();
	}
	void writeToFile(const char* FileName)
	{
		fstream file(FileName, ios::out | ios::binary);
		if (!file)
		{
			cout << "   文件打开错误!" << endl;  abort();
		}
		else
			cout << "file open success" << endl;
		for (int i = 0; i < num; ++i) { ss[i].writeToFile(file); }
		cout << "num=" << num << endl;
		file.close();
	}
private:
	student  ss[100];
	static int num;
};
int  studentlist::num = 0;


class teacherlist
{
public:
	teacherlist() { }
	void insert(teacher& s, int r)
	{
		teacher temp;
		for (int i = num - 1; i >= r - 1; i--)
			ss[i + 1] = ss[i];
		ss[r - 1] = s;
		num++;

	}
	void dele(char nam[20])
	{
		int t = -1, i;
		for (i = 0; i < num; i++)
			if (strcmp(ss[i].getname(), nam) == 0)
			{
				t = i; break;
			}
		if (t >= 0 && t < num)
		{
			for (i = t; i < num; i++)
				ss[i] = ss[i + 1];
			cout << "delete!" << endl;
			num--;
		}
		else
			cout << "not delete!" << endl;


	}
	void locate(char nam[20])
	{

		int t = -1;
		for (int i = 0; i < num; i++)
			if (strcmp(ss[i].getname(), nam) == 0)
			{
				t = i; break;
			}
		if (t >= 0 && t < num)
		{

			cout << "Find!" << endl;

		}
		else
			cout << "not Find!" << endl;

	}
	void list()
	{

		for (int i = 0; i < num; i++)
		{
			cout << "no." << i + 1 << "teacher:" << endl;
			ss[i].print();
		}


	}
	void append(teacher& s)
	{
		ss[num] = s;
		num++;

	}
	void findnum() { cout << "num" << num << endl; }
private:
	teacher  ss[100];
	static int num;
};
int teacherlist::num = 0;


class employlist
{
public:
	employlist() {  }
	void insert(employ& s, int r)
	{

		employ temp;
		for (int i = num - 1; i >= r - 1; i--)
			ss[i + 1] = ss[i];
		ss[r - 1] = s;
		num++;
	}
	void dele(char nam[20])
	{

		int t, i;
		for (i = 0; i < num; i++)
			if (strcmp(ss[i].getname(), nam) == 0)
			{
				t = i; break;
			}
		if (t >= 0 && t < num)
		{
			for (i = t; i < num; i++)
				ss[i] = ss[i + 1];
			cout << "delete!" << endl;
			num--;
		}
		else
			cout << "not delete!" << endl;

	}
	void locate(char nam[20])
	{
		int t = -1;
		for (int i = 0; i < num; i++)
			if (strcmp(ss[i].getname(), nam) == 0)
			{
				t = i; break;
			}
		if (t >= 0 && t < num)
		{

			cout << "Find!" << endl;

		}
		else
			cout << "not Find!" << endl;


	}
	void list()
	{

		for (int i = 0; i < num; i++)
		{
			cout << "no." << i + 1 << "employ:" << endl;
			ss[i].print();
		}

	}
	void append(employ& s)
	{

		ss[num] = s;
		num++;

	}
	void findnum() { cout << "num=" << num << endl; }
private:
	employ  ss[100];
	static int num;
};
int employlist::num = 0;


void menustudent(void)
{
	system("cls");       //清屏
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "       简单学生信息处理系统" << endl << endl;
	cout << "1.插入学生 " << endl;
	cout << "2:删除学生" << endl;
	cout << "3.追加学生" << endl;
	cout << "4.输出学生信息" << endl;
	cout << "5:查询学生人数 " << endl;
	cout << "6.查询学生" << endl;
	cout << "7:write to file" << endl;
	cout << "8:read from file" << endl;
	cout << "9:退出 " << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << endl << endl << endl;
}

void menuteacher(void)
{
	system("cls");       //清屏
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "       简单教师信息处理系统" << endl << endl;
	cout << "1.插入教师 " << endl;
	cout << "2:删除教师" << endl;
	cout << "3.追加教师" << endl;
	cout << "4.输出教师信息" << endl;
	cout << "5:查询教师人数 " << endl;
	cout << "6.查询教师" << endl;
	cout << "7:退出 " << endl << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << endl << endl << endl;
}

void menuemploy(void)
{
	system("cls");       //清屏
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "       简单职工信息处理系统" << endl << endl;
	cout << "1.插入职工 " << endl;
	cout << "2:删除职工" << endl;
	cout << "3.追加职工" << endl;
	cout << "4.输出职工信息" << endl;
	cout << "5:查询职工人数 " << endl;
	cout << "6.查询职工" << endl;
	cout << "7:退出 " << endl << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << endl << endl << endl;
}

void menu()
{
	system("cls");       //清屏
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "       请选择要处理的信息类型" << endl << endl;
	cout << "1.学生信息处理 " << endl;
	cout << "2:教师信息处理" << endl;
	cout << "3.职工信息处理" << endl;
	cout << "4:退出 " << endl << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << "-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*" << endl;
	cout << endl << endl << endl;
}

#include <iostream>
using namespace std;
int main()
{
	char na[30], se, sp[30], de[30], po[30];
	int ag, k;
	int c, cho;
	while (1)
	{
	s:menu();
		cout << "请输入选择：";
		cin >> c;
		if (c == 1)
		{
			studentlist  s;
			while (1)
			{
				menustudent();
				do
				{
					cout << "请输入选择:" << endl;
					cin >> cho;
				} while (cho < 1 || cho>9);
				switch (cho)
				{
				case 1:
				{  cout << "input student's name,age,sex,speciality:" << endl;
				cin >> na >> ag >> se >> sp;
				student t(na, ag, se, sp);
				cout << "input the locate that you want insert:" << endl;
				cin >> k;
				s.insert(t, k); break;    //
				}
				case 2: {cout << "要删除职工的姓名？";
					cin >> na;
					s.dele(na);
					break; }
				case 3:
				{ cout << "input student's name,age,sex,speciality:" << endl;
				cin >> na >> ag >> se >> sp;
				student tt(na, ag, se, sp);
				s.append(tt);  //
				break; }
				case 4:
				{s.list();  //
				break; }
				case 5: {s.findnum(); //
					break;     }
				case 6: { cout << "input name:" << endl;
					cin >> na;
					s.locate(na);//
					break;
				}

				case 7: {s.writeToFile("aa"); break; }
				case 8: {s.readFromFile("aa"); break; }
				case 9: goto s;


				}
				cout << endl << "敲回车继续!" << endl;
				cin.sync();   //清空输入缓冲区的内容  
				cin.get();    //从指定的输入流中提取一个字符，防止屏幕一闪而过
			}
		}
		else if (c == 2)
		{
			teacherlist  rr;
			while (1)
			{
				menuteacher();
				do
				{
					cout << "请输入选择:" << endl;
					cin >> cho;
				} while (cho < 1 || cho>7);
				switch (cho)
				{
				case 1:
				{ cout << "input teacher's name,age,sex,department:" << endl;
				cin >> na >> ag >> se >> de;
				teacher x(na, ag, se, de);
				cout << "input the locate that you want insert:" << endl;
				cin >> k;
				rr.insert(x, k); break;//
				break; }
				case 2: {cout << "要删除职工的姓名？";
					cin >> na;
					rr.dele(na);
					//
					break; }
				case 3:
				{ cout << "input teacher's name,age,sex,department:" << endl;
				cin >> na >> ag >> se >> de;
				teacher xx(na, ag, se, de);
				rr.append(xx);//
				break; }
				case 4: {rr.list();//
					break; }
				case 5: {rr.findnum();//

					break;  }
				case 6: { cout << "input name:" << endl;
					cin >> na;
					rr.locate(na);//
					break;
				}
				case 7:	goto s;
				}
				cout << endl << "敲回车继续!" << endl;
				cin.sync();   //清空输入缓冲区的内容  
				cin.get();    //从指定的输入流中提取一个字符，防止屏幕一闪而过
			}
		}
		else  if (c == 3)
		{
			employlist  ee;
			while (1)
			{
				menuemploy();
				do
				{
					cout << "请输入选择:" << endl;
					cin >> cho;
				} while (cho < 1 || cho>7);
				switch (cho)
				{
				case 1:
				{ cout << "input employ's name,age,sex,department,position:" << endl;
				cin >> na >> ag >> se >> de>>po;
				employ m(na, ag, se, de,po);
				cout << "input the locate that you want insert:" << endl;
				cin >> k;
				ee.insert(m, k); break;//
				break; }
				case 2: {cout << "要删除职工的姓名？";
					cin >> na;
					ee.dele(na);
					//
					break; }
				case 3:
				{ cout << "input employ's name,age,sex,department,position:" << endl;
				cin >> na >> ag >> se >> de>>po;
				employ mm(na, ag, se, de,po);
				ee.append(mm);;//
				break; }
				case 4: {ee.list();//
					break; }
				case 5: {ee.findnum();//

					break;  }
				case 6: { cout << "input name:" << endl;
					cin >> na;
					ee.locate(na);//
					break;
				}
				case 7:	goto s;
				}
				cout << endl << "敲回车继续!" << endl;
				cin.sync();   //清空输入缓冲区的内容  
				cin.get();    //从指定的输入流中提取一个字符，防止屏幕一闪而过
			}
		}

		else  return 0;
	}
	return 0;
}