linked lists

[naskopw]

Is it possible to add or remove elements on a particular position in a linked list.

[AbstractionAnon]

Yes.

To insert at a specific position, see the second function declaration here:
http://www.cplusplus.com/reference/stl/list/insert/

For removing elements, you must specify the position:
http://www.cplusplus.com/reference/stl/list/erase/

[naskopw]

Well I'm trying to write it myself, not using STL lists. Here is what I have done up to now.

#include<iostream>
#include<stdio.h>
#include<string>
using namespace std;

struct PC
{
	string model;
	PC *next;
}*first=NULL,*last=NULL;

void add()
{
	PC *p=new PC;
	cin>>p->model;
	p->next=NULL;
	if(!first)
	{
		first=last=p;
	}
	else
	{
		last->next=p;
	}
}
void print_l()
{
	PC* p=first;
	while(p)
	{
		cout<<p->model<<endl;
		p=p->next;
	}
}
int main()
{
	int choice;
	while(1)
	{
		printf("1.Add\n2.Print\n");
		cin>>choice;
		switch(choice)
		{
			case 1: add();break;
			case 2: print_l();break;
			default: exit(0);
		}
	}
}

I don't have a clue about deleting.