Sir sortat

#include <iostream>

using namespace std;

struct nod
{
    int h;
    nod* adr;
};

int main()
{
    int n,a;
    nod* prim, *q,*p,*r;
    prim=new nod;
    cout<<"Nr de elevi: "; cin>>n;
    prim->h=INT_MAX; prim->adr=NULL;
    for(int i=1;i<=n;i++)
    {
        cout<<"Ce inaltime? "; cin>>a;
        q=new nod;
        q->h=a;
        if(a<prim->h)
        {
            q->adr=prim;
            prim=q;
        } else {
            p=prim;
            while(a>=p->h)
            {
                r=p;
                p=p->adr;
            }
            q->adr=p;
            r->adr=q;
        }

    }
    cout<<"Sirul sortat este: ";
    p=prim;
    for(int i=1;i<=n;i++)
    {
        cout<<p->h<<" ";
        p=p->adr;
    }

    return 0;
}