//Linked List program, God Speed.

#include <iostream>
#include <fstream>
#include <string>
using namespace std;

void data(string lastname,float& gpa_value);
const int nil = 0;

class node_type
{
public:
    string name;
    float gpa;
    node_type *next;
};

void main()
{
	node_type *uno, *duo, *p, *q, *r, *newnode, *newnode2;
	int i;
	float gpa_value;
	string lastname;

	//============
	uno = new node_type;
	p = uno;
	data(lastname,gpa_value);
	(*uno).name = lastname;
	(*uno).gpa = gpa_value;
	(*uno).next = nil;

	duo = new node_type;
	r = duo;
	(*duo).name = lastname;
	(*duo).gpa = gpa_value;
	(*duo).next = nil;
 	for (i=0; i<=8;++i)
	{
	    data(lastname,gpa_value);
		newnode = new node_type;
		newnode2 = new node_type;
		(*newnode).name = lastname;
		(*newnode).gpa = gpa_value;
		(*newnode).next = nil;
		(*newnode2).name = lastname;
		(*newnode2).gpa = gpa_value;
		(*newnode2).next = nil;
		(*p).next = newnode;
		(*r).next = newnode2;
		p = newnode;
		r = newnode2;
	}


//==============================
		q = uno;
		cout << "For uno, the list contains \n";
		while (q != nil)
		{
			cout << "Last name is :" << (*q).name << "\n";
			cout << "GRADE is :" << (*q).gpa << "\n";
			q = (*q).next;
		}

		q = duo;
		cout << "\n\nFor duo, the list contains \n";
		while (q != nil)
		{
			cout << "Last name is :" << (*q).name << "\n";
			cout << "GRADE is :" << (*q).gpa << "\n";
			q = (*q).next;
		}
}
//====================================
void data(string lastname,float& gpa_value)
{
	cout << "Enter last name \n" ;
	cin >> lastname;
	cout << lastname << "\n";
	cout << "Enter gpa \n" ;
	cin >> gpa_value;
	cout << gpa_value << "\n";
}