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#include <iostream>
using namespace std;
//Creación del Nodo
struct Nodo{
int Cod;
float pf;
Nodo *punt;
};
Nodo *Lista;
//Proceso que crea nodo
void Crea_Nodo(Nodo *&p, int Cod, float pf){
if(p==NULL){
p=new Nodo;
p->Cod=Cod;
p->pf=pf;
p->punt=NULL;
}
else{
Crea_Nodo(p->punt,Cod,pf);
}
}
//Proceso Busca en una lista ordenada respecto al campo código
void Busca(Nodo *p, Nodo *&ant, Nodo *&act, int Cod, bool &Enlista){
bool completo=false;
ant=NULL;
act=p;
Enlista=false;
while(act!=NULL && !completo){
if(Cod>act->Cod){
ant=act;
act=act->punt;
}
else{
completo=true;
if(act->Cod==Cod){
Enlista=true;
}
}
}
}
//Proceso elimana un nodo en una lista ordenada
void Elimina(Nodo *&p, int Cod){
Nodo *ant,*act;
bool Enlista;
//llamando a Busca
Busca(p,ant,act,Cod,Enlista);
if(Enlista){
if(p==act){
p=p->punt;
}
else{
ant->punt=act->punt;
}
cout<<"Dato eliminado..."<<endl;
}
else{
cout<<"Codigo no existe...."<<endl;
}
}
//Proceso que inserta un nodo en una lista ordenada
void Inserta(Nodo *&p, int Cod, float pf){
Nodo *ant,*act,*ins;
bool Enlista;
//Llamando a Busca
Busca(p,ant,act,Cod,Enlista);
if(!Enlista){
ins=new Nodo;
ins->Cod=Cod;
ins->pf=pf;
ins->punt=NULL;
if(p==act){
p=ins;
}
else{
ins->punt=act;
ant->punt=ins;
}
cout<<"Dato insertado.."<<endl;
}
else{
cout<<"Codigo no existe..."<<endl;
}
}
//Proceso de Recorre Lista
void Recorre(Nodo *p){
if(p!=NULL){
cout<<p->Cod<<"t"<<p->pf<<endl;
Recorre(p->punt);
}
}
int main(){
Lista=NULL;
Nodo *ant,*act;
bool Enlista;
int i,n,Cod;
float pf;
cout<<"# de datos:"; cin>>n;
for(i=1; i<=n; i++){
cout<<"Dato #"<<i<<":"<<endl;
cout<<"Codigo:"; cin>>Cod;
cout<<"Promedio final:"; cin>>pf;
//Llamar a Crea Nodo
Crea_Nodo(Lista,Cod,pf);
}
//llamra a Recorre
Recorre(Lista);
cout<<"Ingrese codigo a eliminar:"; cin>>Cod;
Elimina(Lista, Cod);
Recorre(Lista);
cout<<"Ingrese codigo a insertar:"; cin>>Cod;
cout<<"Ingrese promedio a insertar:"; cin>>pf;
Inserta(Lista, Cod,pf);
Recorre(Lista);
return 0;
}
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