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#pragma once
#include <iostream>
#include <string>
using std::cout;
using std::endl;
using std::string;

template <typename T>
class demo {
private:
    T var;
    string name;
    string scope;
    static string ato = "auto_ptr";
    static string uniq = "unique_ptr";
    static string shr = "shared_ptr";
public:
    demo(T val = 0, string n = "NULL", string sc = "main()", string pt = demo::ato) {
        var = val;
        name = n;
        scope = sc;
        cout << "Object " << name << " with value of " << var << " in scope " << scope << " created using " << pt << "." << endl;
    }
    
    ~demo() {
        cout << "Object " << name << " with value of " << var << " in scope " << scope << " destroyed by " << pt << "." << endl;
    }

    void setnm(string nm) {name = nm;}
    void setv(T v) {var = v;}
}

#include "demo"
#include <iostream>
#include <memory>
using namespace std;

int main() {
    auto_ptr p1 = new demo<unsigned short>(1, "p1");
    unique_ptr p2 = new demo<unsigned short>(2, "p2", , demo<unsigned short>::uniq);
    shared_ptr p3 = new demo<unsigned short>(3, "p3", , demo<unsigned short>::shr);
    auto_ptr p11 = p1;
    p11 -> setnm("p11");
    //unique_ptr p22 = p2;     will cause err at compile time
    //p22 -> setnm("p22");
    shared_ptr p33 = p3;
    p33 -> setnm("p33");
    return 0;
}

import std.core;