Copy constructor

#include <iostream>
using namespace std;

class DZS
{
private:
    int *student;
public:
    int getAmount();
    DZS(int amount);
    DZS(const DZS &lol);
    ~DZS();
};

DZS::DZS(int amount)
{
    cout << "Constructor Called"<<endl;
    student = new int;
    *student = amount;
}
DZS::DZS(const DZS &lol)
{
    cout << " COPY Constructor Called"<<endl;
    student = new int;
    *student = *lol.student;
}
DZS::~DZS()
{
    cout << "Destreactor Called."<<endl;
    delete student;
}
int DZS::getAmount()
{
    return *student;
}
void display(DZS lol)
{
    cout << "Total Student in DZS is: " << lol.getAmount() <<endl;
}
int main()
{
    DZS dzs(2000);
    display(dzs);
}