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Carlos Peralta's questions

Martin Hope
Carlos Peralta
Asked: 2022-10-22 09:05:10 +0800 CST
  • 0

I have an error in the node class, when I try to do this with templates

the error that tells me: template arguments required for class Stack

Node class:

#ifndef NODO_H_INCLUDED
#define NODO_H_INCLUDED
#include <stdlib.h>
template <class T>
class Nodo{
private:
    T Valor;
    Nodo<T> *siguiente;
public:
    Nodo(T v){
        this->Valor=v;
        this->siguiente=NULL;
    }
    void setSiguiente(Nodo<T> *sig){
        this->siguiente=sig;
    }
friend class Pila;
};

#endif // NODO_H_INCLUDED

Stack Class:

#ifndef PILA_H_INCLUDED
#define PILA_H_INCLUDED
#include "Nodo.h"
template <class T>
class Pila{
    private:
        Nodo<T> *Primero;
        Nodo<T> *Ultimo;
        bool PilaVacia(){
            return (this->Primero==NULL);
        }
    public:
        Pila(){
            this->Primero=NULL;
            this->Ultimo=NULL;
        }

        void Meter(T n){
            Nodo<T> *nuevo=new Nodo<T>(n);
            if(this->PilaVacia()){
                this->Primero=nuevo;
            }
            else{
                this->Ultimo->setSiguiente(nuevo);
            }
            this->Ultimo=nuevo;
        }
};


#endif // PILA_H_INCLUDED

main.cpp

#include <iostream>
#include "Pila.h"
using namespace std;

int main()
{
    Pila<int> pl;
    pl.Meter(1);
    cout << "Hello world!" << endl;
    return 0;
}

[The error sends me to the following line1

At the moment it is the scheme that I must do, I don't know why it sends me to that error, I can't find a solution, I also don't know why it doesn't recognize the Stack class as a friend, if it already has the friend class Stack

c++
Martin Hope
Carlos Peralta
Asked: 2022-08-09 07:36:07 +0800 CST
  • 0

The following problem happens to me, when I try to pass the values ​​to the constructor as seen in the code, when calling the result method it returns a value=-1163005939 so it is as if the data was passed to the constructor in the way that it is, they were not correct.

Main function code main.

#include <iostream>
#include <conio.h>
#include "suma1.h" // ahora incluimos en la cabecera el archivo suma1.h

using namespace std;

int main(){
    suma1 *Objetosuma; // declarando la variable puntero tipo suma
    int n1, n2;
    cout<<"Digite el primer numero"<<endl;
    cin>>n1;
    cout<<"Digite el segundo numero"<<endl;
    cin>>n2;
    Objetosuma=new suma1(n1,n2);
    Objetosuma->MostrarResultado();

    getch();
    return 0;
}

Sum1.h class code

#include <iostream>

using namespace std;

class suma1{  
private:
    int numero1,numero2,resultado;
public:
    suma1(int n1,int n2) // por puntero
    {
        this->numero1 = n1;
        this->numero2 = n2;
    }

    void OperacionSuma(){
        this->resultado =this->numero1+this->numero2;
    }

    void MostrarResultado(){
        cout<<"El resultado es "<<this->resultado<<endl;
    }
};
c++