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buna seara

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Buna seara am un program C++ cu lista dublu inlantuita sau ma rog ce am incercat sa fac va rog daca se poate sa va uitati peste program si sa-mi aratati cum se face mainu la program chiar nu stiu multumesc anticipat :

#include<iostream.h>

#include<conio.h>

#include<fstream.h>

struct nod{char numele firmei[16],char numele produsului[20],char detalii[50],nod*URM,nod*ANT;};nod*prim,*ultim;

void creare(char s[100]){nod*p=new nod;

f.get(p->numele firmei,16,' ');

f.get(p->numele produsului,20,' ');

f.get(p->detalii,50,' ');

if(prim==NULL){prim=ultim=p;

p->URM=NULL;}

else{ultim->URM=p;ultim=p;p->URM=NULL;

f.close();}

void stergere(nod*prim)

{nod*p;

while(prim!=NULL)

{p=prim;

prim=prim->URM;

delete p;}}

void parcurgere(nod*prim)

{nod*p;p=prim;

while(p*!=NULL)

{cout<<p->numele firmei,16,' ';

cout<<p->numele produsului,20,' ';

cout<<p->detalii,50,' ';

p=p->URM;}}

void main()

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