Звучници

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


// vashiot kod ovde

class Speaker{
protected:
    float mokjnost;
    char* model;
    bool pojachalo;
    float cena;
    static int DDV;
public:
    Speaker(float power,char* model,bool amp,float price){
        mokjnost=power;
        this->model=new char[strlen(model)+1];
        strcpy(this->model,model);
        pojachalo=amp;
        cena=price;
    }

    friend ostream& operator<<(ostream& out,Speaker& s){
        out<<s.model<<" ";
        (s.pojachalo)? out<<"ima pojachalo " : out<<"nema pojachalo ";
        out<<s.presmetajCena();
        return out;
    }

    virtual float presmetajCena()=0;

    static void smeniDDV(int ddv){
        DDV=ddv;
    }

    static void vkupnoDDV(Speaker** s, int n){
        float vkupnaCena=0;
        float vkupnoDdv=0;
        for(int i=0;i<n;i++){
            vkupnaCena+=s[i]->presmetajCena();
            vkupnoDdv+=s[i]->presmetajCena()*DDV/100;
        }
        cout<<"Vkupna cena: "<<vkupnaCena<<endl<<"Vkupno DDV: "<<vkupnoDdv<<endl;
    }

    virtual ~Speaker(){
        delete [] model;
    }

};

int Speaker::DDV=18;

class TowerSpeaker:public Speaker{
protected:
    bool stolb;
public:
    TowerSpeaker(float power,char* model,bool amp,float price,bool fullSemi):Speaker(power,model,amp,price){
        stolb=fullSemi;
    }

    float presmetajCena(){
        int price=cena;
        if(pojachalo) price+=cena*0.1;
        if(stolb) price+=cena*0.05;
        return  price;
    }

};

class MonitorSpeaker:public Speaker{
protected:
    bool namena;
public:
    MonitorSpeaker(float power,char* model,bool amp,float price,bool fullSemi):Speaker(power,model,amp,price){
        namena=fullSemi;
    }

    float presmetajCena(){
        int price=cena;
        if(pojachalo) price+=cena*0.1;
        if(namena) price+=cena*0.15;
        return price;
    }
};

void lowestPrice(Speaker** s, int n){
    Speaker *minS=s[0];
    for(int i=0;i<n;i++){
        if(s[i]->presmetajCena()<minS->presmetajCena()){
            minS=s[i];
        }
    }
    cout<<*(minS);
}

// zabraneto e menuvanje na main funkcijata


int main() {
    int testCase;
    cin >> testCase;
    float power;
    char model[100];
    bool amp;
    float price;
    bool fullSemi;
    if(testCase == 1) {
        cout << "===== TESTING CONSTRUCTORS ======" << endl;
        cin >> power;
        cin >> model;
        cin >> amp;
        cin >> price;
        cin >> fullSemi;
        TowerSpeaker ts(power, model, amp, price, fullSemi);
        cout << ts << endl;
        cin >> power;
        cin >> model;
        cin >> amp;
        cin >> price;
        cin >> fullSemi;
        MonitorSpeaker ms(power, model, amp, price, fullSemi);
        cout << ms << endl;

    } else if(testCase == 2) {
        cout << "===== TESTING LOWEST PRICE ======" << endl;
        int n;
        cin >> n;
        Speaker** speakers = new Speaker*[n];
        for(int i = 0; i < n; ++i) {
            cin >> power;
            cin >> model;
            cin >> amp;
            cin >> price;
            cin >> fullSemi;
            if(i % 2 == 1)
                speakers[i] = new TowerSpeaker(power, model, amp, price, fullSemi);
            else
                speakers[i] = new MonitorSpeaker(power, model, amp, price, fullSemi);
        }

        lowestPrice(speakers, n);
        for(int i = 0; i < n; ++i) {
            delete speakers[i];
        }
        delete [] speakers;
    } else if(testCase == 3) {
        cout << "===== TESTING DDV STATIC ======" << endl;
        int n;
        cin >> n;
        Speaker** speakers = new Speaker*[n];
        for(int i = 0; i < n; ++i) {
            cin >> power;
            cin >> model;
            cin >> amp;
            cin >> price;
            cin >> fullSemi;
            if(i % 2 == 1)
                speakers[i] = new TowerSpeaker(power, model, amp, price, fullSemi);
            else
                speakers[i] = new MonitorSpeaker(power, model, amp, price, fullSemi);
        }
        Speaker::vkupnoDDV(speakers, n);
        int ddv;
        cin >> ddv;
        Speaker::smeniDDV(ddv);
        Speaker::vkupnoDDV(speakers, n);
        for(int i = 0; i < n; ++i) {
            delete speakers[i];
        }
        delete [] speakers;
    }


}