人，学生，老师.cpp

这是一个用c++编写的程序

#include"iostream.h"
class person
{
	char *name;
	int age;
public:
	
person(char n[],int a)
{ 
       name=n;
	   age=a;	  
}
 virtual void disp()
 {  
	cout<<"姓名 "<<name;
	cout<<endl<<"年龄 "<<age;
}
};
class student:public person
{
int num;
public:
	student(char m[],int n,int s):person( m, n)
	{
		num=s;
	}
virtual	void disp()
	{
		person::disp();
		cout<<endl<<"学生学号："<<num<<endl;
}
};
class teacher:public person
{
int tnum;
char *p;
public:
	teacher(char q[],int w,int e,char r[]):person( q, w)
	{
		tnum=e;
		p=r;
	}
virtual	void disp()
	{
		person::disp();
		cout<<endl<<"教职工号："<<tnum;
		cout<<endl<<"教工职称："<<p<<endl;
}
};

void main()
{
	person a("王芳",78);
	a.disp();
	cout<<endl<<endl;
	student b("刘丽",12,21);
	b.disp();
	cout<<endl;
	teacher c("潘达",23,45,"博士生导师");
	c.disp();
	cout<<endl;
}