本科生以及研究生信息

#include "iostream"
#include "string"
#include "list"


using namespace std;

class Student
{
protected:
	string Name;
	string Num;
	string Major;

public:
	Student(){}
	Student(string Na, string Nu, string Ma)
	:Name(Na), Num(Nu), Major(Ma)
	{}

	Student(Student const& st)
	:Name(st.Name), Num(st.Num), Major(st.Major)
	{}

	virtual void display()
	{

		cout << "Name:" << Name << endl;
		cout << "Num:" << Num << endl;
		cout << "Major:" << Major << endl; 
	}

};


class UnderGrad : public Student
{
protected:

public:
	UnderGrad(){}
	UnderGrad(string Na, string Nu, string Ma)
	:Student(Na, Nu, Ma)
	{}
	virtual void display()
	{
		cout << "本科生" << endl;
		cout << "Name:" << Name << endl;
		cout << "Num:" << Num << endl;
		cout << "Major:" << Major << endl; 
	}
};

class Graduate : public Student
{
protected:
	string Teacher;

public:
	Graduate(){}
	Graduate(string Na, string Nu, string Ma, string Te)
	:Student(Na, Nu, Ma), Teacher(Te)
	{}

	virtual void display()
	{
		cout << "研究生" << endl;
		cout << "Name:" << Name << endl;
		cout << "Num:" << Num << endl;
		cout << "Major:" << Major << endl; 
		cout << "Teacher:" << Teacher << endl;
	}
};

void Create(list<Student*> &L)
{
	cout << "输入创建数量" << endl;
	int n = 0;
	cin >> n;

	char c = '0';

	for(int i = 0; i < n; ++i)
	{
		cout << "1.本科生" << endl;
		cout << "2.研究生" << endl;
		cin >> c;
			switch(c)
		{
			case '1' : 
			{
				cout << "本科生" << endl;
				cout << "姓名" << endl;
				string Na;
				cin >> Na;

				cout << "学号" << endl;
				string Nu;
				cin >> Nu;

				cout << "专业" << endl;
				string Ma;
				cin >> Ma;

				Student* p = NULL;
				p = new UnderGrad(Na, Nu, Ma);
				L.push_back(p);
				break;
			}

			case '2' :
			{
				cout << "研究生" << endl;
				cout << "姓名" << endl;
				string Na;
				cin >> Na;

				cout << "学号" << endl;
				string Nu;
				cin >> Nu;

				cout << "专业" << endl;
				string Ma;
				cin >> Ma;

				cout << "导师" << endl;
				string Te;
				cin >> Te;

				Student* p = NULL;
				p = new Graduate(Na, Nu, Ma, Te);
				L.push_back(p);
				break;
			}

			default:
			{
				cout << "输入错误" << endl;
				break;
			}


		}
	}
}


void Traveal(list<Student*> const &L)
{
	for(auto i = L.begin(); i != L.end(); ++i)
	{
		(*i) -> display();
		cout << endl;
	}
}

int main(int argc, char const *argv[])
{


	list<Student*> L;
	Create(L);
	Traveal(L);
	L.clear();

	return 0;
}