Linked List with a node using push_back

[macl229]

I am having trouble with void push_back() i dont knwo what to put in the () to make it work.



#include <iostream>

#include <fstream>

#include <vector>

#include <iterator> //googled these systemss from here on down

#include <stdio.h>

#include <stdlib.h>

using namespace std;



class Line {



public:


Line();

Line(string c);

string get_line() const;

void set_line(string c);



private:



string line;


};



Line::Line()



: line("") {}



Line::Line(string c)



: line(c) {}


string Line::get_line() const {

return line;
}



void Line::set_line(string c){

line = c;
}

//Linked List is a list of nodes so this class is neccessary.


class Node {



public:



Node(Line n);


Line get_pro();



private:



Node *next;

Line pro;


friend class TiedList; // this is what access and stores the nodes
};



Line Node::get_pro(){



return pro;

}




class TiedList {



public:


TiedList();

TiedList(const TiedList & first);

~TiedList();


TiedList &operator=(const TiedList &second);


bool empty() const;

int length() const;


Node get(int collection);


void push_front(Line pro);


void pop_front();

void push_back();

void remove(int ps);

void insert(string line_in,int ps);



private:



Node *copy_node(const Node *in) const;


Node *first;

};


Node::Node(Line n)


: next(NULL), pro(n) {}

//Creates an empty list.



TiedList::TiedList() {



first = NULL;

}



bool TiedList::empty() const {



if (first == NULL) {



return true;

}


else


return false;

}




int TiedList::length() const {



int l = 0;


for(Node *car = first; car != NULL; car = car->next) {



l++;


}



return l;


}


Node TiedList::get(int collection) {



Node* car = first;


for(int l=0; l < collection; l++) {



car = car->next;



return Node(Line(""));


}



if(car == NULL) {



return Node(Line(""));



}



else



return *car;

}

[Militie]

http://www.cplusplus.com/reference/list/list/push_back/

push_back() adds a new element to the end of the list. You are going to need to pass the node you would like to pin to the back of the list.

[ButchCavendish]

put your code in proper format