void add(int number)
{
    if(!head) {
    head=new tracker;
    head->i=number;
    head->next=0;
    head->prev=0;
    tail=head;
    } else {
    tail->next=new tracker;
    tail->prev=tail;
    tail=tail->next;
    tail->i=number;
    tail->next=0;
    }
}

void remove(int number)
 {
 struct tracker *tmp;
 struct tracker *bla;

 tmp=head;
 int rcount=0;

while(tmp) {
    if(tmp->i==number) {
    cout << "Found match, removing node " << rcount << " with content: " << tmp->i << endl;
    tmp->prev->next=tmp->next;
    bla=tmp->prev;
    delete tmp;
    tmp=bla;

    }
    rcount++;
    tmp=tmp->next;}
 }