OOP Labs 4 ListContainer

#include <iostream>
#include <cstring>
using namespace std;

class List {
private:
    int* broevi;
    int brBroevi;
public:
    List() {
        broevi=new int[0];
        brBroevi=0;
    }
    ~List(){
        delete[] broevi;
    }
    List(int* broevi,int brBroevi) {
        this->broevi=new int[brBroevi];
        for(int i=0; i<brBroevi; i++)
            this->broevi[i]=broevi[i];
        this->brBroevi=brBroevi;
    }
    List(const List& l) {
        this->brBroevi=l.brBroevi;
        this->broevi=new int[l.brBroevi];
        for(int i=0; i<l.brBroevi; i++)
            this->broevi[i]=l.broevi[i];
    }
    List& operator=( List& l) {
        if(this!=&l) {
            delete[]broevi;
            brBroevi=l.brBroevi;
            broevi=new int[l.brBroevi];
            for(int i=0; i<l.brBroevi; i++)
                broevi[i]=l.broevi[i];
        }
        return *this;
    }
    int sum() {
        int suma=0;
        for(int i=0; i<brBroevi; i++) {
            suma+=broevi[i];
        }
        return suma;
    }
    double average() {
        return sum()*1.0/brBroevi;
    }
    void pecati() {
        cout<<brBroevi<<": ";
        for(int i=0; i<brBroevi; i++) {
            cout<<broevi[i]<<" ";
        }
        cout<<"sum: "<<sum();
        cout<<" average: "<<average();
    }
    int getbrBroevi(){
        return brBroevi;
    }
};

class ListContainer {
private:
    List* listi;
    int brElementi;
    int brObidi;
public:
    ListContainer() {
        listi=new List[0];
        brElementi=0;
        brObidi=0;
    }
        ~ListContainer(){
        delete[] listi;
    }
    ListContainer(const ListContainer& lc) {
        this->brObidi=lc.brObidi;
        this->brElementi=lc.brElementi;
        this->listi=new List[lc.brElementi];
        for(int i=0; i<lc.brElementi; i++) {
            this->listi[i]=lc.listi[i];
        }
    }
    ListContainer& operator=(ListContainer& lc) {
        if(this!=&lc) {
            delete[] listi;
            brObidi=lc.brObidi;
            brElementi=lc.brElementi;
            listi=new List[lc.brElementi];
            for(int i=0; i<lc.brElementi; i++) {
                listi[i]=lc.listi[i];
            }
        }
        return *this;
    }
    int sum(){
        int suma=0;
        for(int i=0;i<brElementi;i++){
            suma+=listi[i].sum();
        }
        return suma;
    }
    double average(){
        int suma=sum();
        int broevi=0;
        for(int i=0;i<brElementi;i++){
            broevi+=listi[i].getbrBroevi();
        }
        return suma/(broevi*1.0);
    }
    void addNewList(List l){
        ++brObidi;
        for(int i=0;i<brElementi;i++){
            if(l.sum()==listi[i].sum())
                return;
        }
        List* tmp=new List[brElementi+1];
        for(int i=0;i<brElementi;i++){
            tmp[i]=listi[i];
        }
        tmp[brElementi++]=l;
        delete [] listi;
        listi=tmp;
    }
    void print(){
        if(!brElementi){
            cout<<"The list is empty"<<endl;
            return;
        }
        else{
            for(int i=0;i<brElementi;i++){
                cout<<"List number: "<<i+1<<" List info: ";
                listi[i].pecati();
                cout<<endl;
            }
        }
        cout<<"Sum: "<<sum();
        cout<<" Average: "<<average()<<endl;
        cout<<"Successful attempts: "<<brElementi<< " Failed attempts: " <<brObidi-brElementi<<endl;
    }
};
int main() {

    ListContainer lc;
    int N;
    cin>>N;

    for (int i=0; i<N; i++) {
        int n;
        int niza[100];

        cin>>n;

        for (int j=0; j<n; j++) {
            cin>>niza[j];

        }

        List l=List(niza,n);

        lc.addNewList(l);
    }


    int testCase;
    cin>>testCase;

    if (testCase==1) {
        cout<<"Test case for operator ="<<endl;
        ListContainer lc1;
        lc1.print();
        cout<<lc1.sum()<<" "<<lc.sum()<<endl;
        lc1=lc;
        lc1.print();
        cout<<lc1.sum()<<" "<<lc.sum()<<endl;

    } else {
        lc.print();
    }
}