KLASE - konstruktori, destruktori

#include <iostream>
using namespace std;

class Student {
    int _brojIndexa;
    char * _imePrezime;
    char _spol;

    public:
        ///////////////////////////
        //konstruktori
        Student(){
            _brojIndexa = 0;

            int vel = 12;
            _imePrezime = new char[12];
            strcpy_s(_imePrezime, vel, "----- -----");

            _spol = '-';
        }
        Student(int index, char * imePrezime, char spol){
            _brojIndexa = index;

            int vel = strlen(imePrezime) + 1;
            _imePrezime = new char[vel];
            strcpy_s(_imePrezime, vel, imePrezime);

            _spol = spol;
        }
        /////////////////////
        //get
        void info(){
            cout << "Broj indexa je: " << _brojIndexa << endl;
            cout << "Ime prezime: \t" << _imePrezime << endl;
            if (_spol == 'M' || _spol == 'm') cout << "Spol - \t\tMuski" << endl;
            else if (_spol == 'Z' || _spol == 'z') cout << "Spol: \t\tZenski" << endl;
            else cout << "Spol: \t\t-" << endl;
            cout << "-------------------------------------\n";
        }
        int getBrojIndexa()const{return _brojIndexa;}
        char * getImePrezime()const{ return _imePrezime; }
        char getSpol()const{ return _spol; }
        /////////////////////
        //set
        void setBrojIndexa(int index){
            if (index > 0) _brojIndexa = index;

        }
        void setImePrezime(char * imePrezime){
            int vel = strlen(imePrezime) + 1;
            _imePrezime = new char[vel];
            strcpy_s(_imePrezime, vel, imePrezime);
    }
        void setSpol(char spol){
        _spol = spol;
    }
        /////////////////////
        // destruktor
        ~Student(){
            delete[] _imePrezime;
            _imePrezime = nullptr;
        }
};

int main(){

    Student a(69, "Nedim Fejzic", 'M');
    a.info();

    Student b;
    b.info();

    Student * pok = new Student(70, "Duracell Baterije", 'm');
    pok->info();

    delete pok;
    pok = nullptr;

    system("pause > null");
    return 0;
}