[C++] Afisare, Stergere, Inserare

#include <iostream>
#include <string.h>

using namespace std;

struct nod {
    char oras[51];
    int temp;
    nod *urm, *ant;
} *p, *u, *prim;
int ok;
void create()
{
    p = new nod;
    prim = p;
    cout << "Oras: "; cin >> p -> oras;
    cout << "Temp: "; cin >> p -> temp;
    p -> ant = NULL;
    cout << '\n';
    while(strcmp(p -> oras, "sterge") != 0) {
        u = new nod;
        cout << "Oras: "; cin >> u -> oras;
        cout << "Temp: "; cin >> u -> temp;
        cout<<'\n';
        p -> urm = u;
        u -> ant = p;
        p = u;
    }
    u -> urm = NULL;
}

void afis()
{
    p = prim;
    while ( p -> urm != NULL ) {
        if( strncmp(p -> oras, "a", 1) == 0 || strncmp(p -> oras, "A", 1) == 0)
        {

            cout << "   |  " <<p -> oras << "               " << p -> temp << " grade   |" << '\n';
        }

        p = p -> urm;
    }
}

void afiss()
{
    p = prim;
    while ( p -> urm != NULL ) {
        cout << "   |  " <<p -> oras << "               " << p -> temp << " grade   |" << '\n';
        p = p -> urm;
    }
}

void sterge()
{
    //int nr;
    char orr[30];
    cout<<"Stergeti orasul: ";
    cin >> orr;
    p = prim;
    nod *q;
    if(strcmp(p -> oras, orr) == 0) {
        q = p;
        p = p -> urm;
        prim = p;
        delete(q);
        p -> ant = NULL;
    }
    else {
        while( p -> urm != NULL)
            if ( strcmp(p -> oras, orr) != 0)
                p = p -> urm;
        q = p;
        p -> ant -> urm = p -> urm;
        p -> urm -> ant = p -> ant;
        delete(q);
    }
}

void inserare()
{
    int nr;
    nod *q;
    q = new nod;
    p = prim;
    cout << "Oras nou: "; cin >> q -> oras;
    cout << "Temperatura: "; cin >> q -> temp;
    cout << "Dati informatia nodului dupa care se face inserarea: "; cin >> nr;
    while( p -> temp != nr ) {
        p = p -> urm;
        q -> urm = p -> urm;
        p -> urm -> ant = q;
        p -> urm = q;
        q -> ant = p;
    }
}

int main()
{
    create();
    inserare();
    for(int i=0; i<5; i++) cout<<'\n';
    cout << "   |   Oras        |   " << "Temperatura  |" << '\n';
    cout << "   ---------------------------------" << '\n';
    afiss();
    for(int i=0; i<5; i++) cout<<'\n';
    return 0;
}