problema cu stive

//creati doua stive cu nr din date.in astefel in prima stiva numerele rotunde in a doua in a doua restu si afisati-le continutul
#include <iostream>
#include<fstream>
using namespace std;

struct stiva
{
    int info;
    stiva *adr;
};
stiva *vfr, *vfo;

int rotund (int x)
{
    while(x)
    {
        if(x%2==0)
            return 0;
        x=x/2;
    }
    return 1;
}

void push(stiva *&vf, int x)
{
    if(vf==NULL)
    {
        vf=new stiva;
        vf->adr=NULL;
        vf->info=x;
    }
    else
    {
        stiva *nou;
        nou=new stiva;
        nou->info=x;
        nou->adr=vf;
        vf=nou;
    }
}

void creare()
{
    int x;
    ifstream fin("date.in");
    while(fin>>x)
        if(rotund(x)==1)
        push(vfr,x);
    else
        push(vfo,x);
}

void pop(stiva *&vf)
{
    if(vf==NULL)
        return ;
    stiva *p;
    p=vf;
    cout<<vf->info<<" ";
    vf=vf->adr;
    delete p;
}

int main()
{
    creare();
    while(vfr!=NULL)
        pop(vfr);
    cout<<'\n';
    while(vfo!=NULL)
        pop(vfo);
    cout<<'\n';

    return 0;
}