[Dev-C++] circular linked list

[chromatonus 7. <chr...@ho...>]

Hi, this is kind of like a game where everyone sits in a circle and starting 
from one person, count off by 5's for example, eliminating every 5th person 
until there is one person left.
there are 2 inputs for this program, one the # of elements in the circular 
list, two the # to count off by.
My program runs in an infinite loop and I don't know why... Thanks for your 
help!

#include <iostream.h>
#include <stdlib.h>
#include <conio.h>


struct node
{
   char data;
   node *next;
};

//PROTOTYPES

void add(node *&, char);

node delete_from(node *&, node *, node *);

//MAIN PROGRAM

int main()
{
   int i, number, counter;
   node *ring = new node;
   node *back = new node;
   node *track = new node;
   cout<< "# of victims in the circle = ";
   cin>> number;
   cout<< "count by how many? ";
   cin>> counter;
   ring -> next = ring;
   ring -> data = 'a';
   for(i=1; i<number; i++)
      add(ring, char(97+i));
   back = ring;
   for(i=1; i<=number; i++)
      back = back -> next;
   if(back -> next == ring)
      cout<< " yers";
   cout<< ring->data;
   while(ring -> next != ring)
   {
      for(i=1; i<=number; i++)
         back = back -> next;
      track = back -> next;
      delete_from(ring, back, track);
      ring = back;
      system("PAUSE");
   }
   cout<< "Survivor is " << ring -> data << "\n";
   system("PAUSE");
}

void add(node *&list, char info)
{
   node *addon = new node;
   addon -> data = info;
   addon -> next = list -> next;
   list -> next = addon;
}

node delete_from(node *&list, node *one, node *two)
{
   cout<< two -> data << "  ";
   one -> next = two -> next;
   return *two;
}



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