Coada, stiva

coada_stiva.cpp

#include <bits/stdc++.h>
using namespace std;

ifstream fin("text.in");

struct nod{
    int info;
    nod *urm;
};

nod *first, *last;
nod *vf;

void addC(nod *&prim, nod *&ultim, int x){
    nod * nou = new nod;
    nou -> info = x;
    nou -> urm = NULL;
    if(prim==NULL)
        prim=ultim=nou;
    else{
        ultim -> urm = nou;
        ultim = nou;
    }
}

void afisare(nod *p){
    if(p==NULL)
        cout<<"lista vida";
    while(p){
        cout<< p -> info<< ' ';
        p = p -> urm;
    }
    cout<<'\n';
}

void addS(nod *&vf, int x){
    nod *nou = new nod;
    nou -> info = x;
    nou -> urm = vf;
    vf = nou;
//    nod * nou = new nod;
//    nou -> info = x;
//    nou -> urm = NULL;
//    if(vf==NULL)
//        vf=nou;
//    else{
//        nou -> urm = vf;
//        vf = nou;
//    }
}

void sterge (nod *& p){
    if (p==NULL)
        return;
    nod * q = p;
    p = p -> urm;
    delete q;
}

int main() {
    int x;
    while (fin>>x)
        addC(first,last,x);
//    afisare(first);
    while(first){
        addS(vf, first -> info);
        sterge(first);
    }
    afisare(vf);
    return 0;
}