Second exercise

#include <iostream>
#include<vector>

using namespace std;

class NegativeNumberException{
private:
    int index;
    int value;
public:
    explicit NegativeNumberException(int i, int v) : index(i), value(v) {};
    int get_index() const {return index;}
    int get_value() const {return value;}
};

ostream &operator<<(ostream &os, NegativeNumberException nn){
    os<<"Negative number at " << nn.get_index() << " position with " << nn.get_value() << " value"<<endl;
    return os;
}

class Total{
private:
    bool omit_negative = true;
public:
    explicit Total(bool omit) : omit_negative(omit) {};
    int total(int [], int);

};
int Total::total(int tab[], int n){
    int total=0;
    for(int i = 0; i<n; i++){
        if(tab[i]<0)
            if(!omit_negative) throw NegativeNumberException(i,tab[i]);
        total+=tab[i];
    }
    return total;
}

int main() {
    int tab[5] = {1, 2, 3, -1, 5};
    bool choice;
    cout<<"Do u want to consider negative numbers: 0)no 1)yes"<<endl;
    cin >> choice;
    Total total_calculator(choice);
    try{
        cout<<total_calculator.total(tab, 5);
    }catch(NegativeNumberException nn){
        cout<<nn;
    }
    return 0;
}