类的继承特性

/*there are these several people: student teacher office_worker student_teacher
*/

#include <iostream>
using namespace std;

class people
{
public:
	people(const char*n)
	{
		name=new char[strlen(n)+1];
		strcpy(name,n);
	}
	void Print()const
	{
		cout<<"Name:"<<name<<endl;
	}
	
private:
	char *name;
};

class student:public people
{
public:
	student(const char*n,const char*m):people(n)
	{
		major=new char[strlen(m)+1];
		strcpy(major,m);
	}
	void Print()const
	{
		people::Print();
		cout<<"Major:"<<major<<endl;
	}
private:
	char *major;
};

class Staff:virtual public people
{
public:
	Staff(const char *n,const char*d):people(n)
	{
		dept=new char[strlen(d)+1];
		strcpy(dept,d);
	}
protected:
	char *dept;//处 科
};

class teacher:public Staff
{
public:
	teacher(const char*n,const char *d,const char*l):people(n),Staff(n,d)
	{
		lesson=new char[strlen(l)+1];
		strcpy(lesson,l);
	}
	void Print()const
	{
		Staff::Print();
		cout<<"lesson:"<<lesson<<endl;
	}
protected:
	char *lesson;
};

class StudentTeacher:public student,public teacher
{
public:
	StudentTeacher(const char *n,const char *m,const char *d,const char *l)
		:people(n),student(n,m),teacher(n,d,l){}
	void Print()const
	{
		student::Print();
		cout<<"Department"<<dept<<endl;
		cout<<"Lesson"<<lesson<<endl;
	}
private:

};

void main()
{
	student stu("Mike","SoftwareEngineering");
	Staff sta("jason","Managerment");
	teacher t("Tim","conputer","c++");
	StudentTeacher st("sam","computerApplication","computer","c++");
	stu.Print();
	sta.Print();
	t.Print();
	st.Print();
}