//MAIN.CPP

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

int main()
{
    cout << "--- Vektor A(2);\n";
    Vektor A(2);
    cout << "\n--- A.displayVektor();\n";
    A.displayVektor();
    cout << "\n--- Vektor B=A;\n";
    Vektor B=A;
    cout << "--- A + B;\n";
    A + B;
    cout << "\n--- Vektor C=A+B\n";
    Vektor C=A+B;
    cout << "\n---C.displayVektor();\n";
    C.displayVektor();
    cout << "\n--- return 0;\n";
    return 0;

//VECTOR.H

#pragma once

class Vektor
{
private:
    int * iArray;
    int n;
    int ID;
    static int Nr;
public:
    Vektor();
    Vektor(int k);
    Vektor(Vektor &quelle);
    ~Vektor();
    void setiArray(int v[], int k);
    void displayVektor();
    Vektor operator + (Vektor OP2);
};

//VECTOR.CPP

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

int Vektor::Nr = 0;

Vektor::Vektor()
{
    iArray = NULL;
    Nr++;
    ID = Nr;
}

Vektor::Vektor(int k)
{
    iArray = new int[k];
    n = k;
    Nr++;
    ID = Nr;
    for (int i = 0; i < k; i++)
    {
        cout << i+1 << ". Vektorelement = ? ";
        cin >> iArray[i];
    }
}

Vektor::Vektor(Vektor &quelle)
{
    iArray = new int[quelle.n];
    n = quelle.n;
    Nr++;
    ID = Nr;
    for (int i = 0; i < n; i++)
    {
        iArray[i] = quelle.iArray[i];
    }
    cout << "Kopierkonstruktor:\n"; displayVektor();
    quelle.displayVektor(); cout << endl;
}

void Vektor::displayVektor()
{
    if (iArray != NULL)
    {
        cout << "Vektor " << ID << ": " << iArray << " {";
        for (int i = 0; i < (n-1); i++)
            cout << iArray[i] << " ";
        cout << iArray[n-1] << "}";
    }
    cout << endl;
}

Vektor::~Vektor()
{
    cout << "Desktruktor; "; displayVektor(); cout << endl;
    delete[] iArray;
}

void Vektor::setiArray(int v[], int k)
{
    delete[] iArray;
    iArray = new int[k];
    n = k;
    for (int i = 0; i < k; i++)
    {
        iArray[i] = v[i];
    }
}

Vektor Vektor::operator + (Vektor OP2)
{
    Vektor temp;
    if (n >= 1 && n == OP2.n)
    {
        int * summe = new int[n];
        for (int i = 0; i < n; i++)
        {
            summe[i] = iArray[i] + OP2.iArray[i];
        }
        temp.setiArray(summe, n);
        delete[] summe;
    }
    cout << "Vektor Temp (in operator +): "; temp.displayVektor();
    cout << "Vektor OP1  (in operator +): "; displayVektor();
    cout << "Vektor OP2  (in operator +): "; OP2.displayVektor();

    return temp;
}