2015.5.26

<img src="https://img-blog.youkuaiyun.com/20150602175721050?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvamlqaWNodWNodQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /><img src="https://img-blog.youkuaiyun.com/20150602175609121?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvamlqaWNodWNodQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />#include<stdio.h>                                                                                                                                                                                                                                                                                   
#include <iostream>
#include<string>
using namespace std;
class student{
public:      
  string name;
  string num;
  string duixiang;

  student(string n,string m,string d):name(n),num(m),duixiang(d)
  {
  
  
  }
     
 
virtual void display()
  {}
      //.char dept[100];
};
class benkesheng:public student
{
public:
	 virtual void creatlb()
	 {}
benkesheng(string n,string m,string d):student(n,m,d){}
 virtual void display()
 {
	 cout<<"学生信息："<<endl;
	 cout<<"本科生："<<endl;
 cout<<"学号:"<<num<<endl;
 cout<<"姓名:"<<name<<endl;
  cout<<endl;
 }
string getname()
{
 return name;
}
 
};
class yanjiusheng:public student{
public:   
	string ds; 
	 virtual void creatlb()
	 {}
yanjiusheng(string n,string m,string d,string s):student(n,m,d),ds(s){}

virtual void display()
  {
	cout<<"学生信息:"<<endl;
	cout<<"研究生："<<endl;



 cout<<"学号:"<<num<<endl;
 cout<<"姓名:"<<name<<endl;
 cout<<"导师姓名:"<<ds<<endl;
 cout<<endl;




 }

};

typedef struct _studentlist{        
student *data;     
   struct _studentlist * next;
}studentlist,*studentlis;

int creatklb(studentlist *&L)
{

 L= new studentlist; 
if(!L) 
{   
 return 0;  
}   
 L->next = NULL;   
 return 1; 
 
}
																																																																																															
 studentlis CreateList(studentlis L,student **ptr)   
{

  

 
 studentlist* p = new studentlist;  

p->data=*ptr;
p->next = NULL;  
 

	 p->next=L->next;
	 L->next=p;
 
return L; 
} 

void displays(student *ptr)
{
ptr->display();


}
studentlis caidan(studentlis &L,student **ptr)
{
studentlis l=L;
	
		string n1,m1,d1,d2;
			char slect;
do 
{

cout<<"创建学生，类型（c）本科生，（g）研究生，（e）结束，（x）遍历链表内容"<<endl;
cin>>slect;
switch(slect)
{
case 'c':
	
cout<<"本科生："<<endl;
cout<<"学号：";
cin>>n1;
cout<<"姓名：";
cin>>m1;

d1="bks";
*ptr=new benkesheng(m1,n1,d1);
CreateList(l,ptr); 
cout<<"创建成功";
displays(*ptr);
break;

case 'g':

cout<<"研究生："<<endl;
cout<<"学号：";
cin>>n1;
cout<<"姓名：";
cin>>m1;
 cout<<"导师姓名:";
cin>>d2;
d1="bks";
*ptr=new yanjiusheng(m1,n1,d1,d2);
CreateList(l,ptr);
cout<<"创建成功";
displays(*ptr);





break;
case 'e':

cout<<"销毁链表";
while(l->next)
{
l->data=NULL;
delete l;
}

break;






case 'x':
	cout<<"遍历链表内容："<<endl;
	studentlis lwl =l;
	while(lwl->next )
{
lwl=lwl->next;
lwl->data->display();
cout<<endl;
}
	break;
}
}
while(slect!='e');

return L;
}

int main()
{
studentlist *l;
student *ptr;
creatklb(l);
caidan(l,&ptr);

return 0;
}