BreakfastMenu array, C++ (gcc)

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//g++  7.4.0

//note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their learning;
#include <iostream>
using namespace std;
class Menu{
public:
virtual void pack() const {cout<<"Default package has 2 parathas, 1 scrambled egg and 1 chai. It costs Tk 50.\n";
}
};
class Pack1:public Menu{
public:
void pack() const {
cout<<"Package 1 has 2 rotis, 1 dal and 1 coffee. It costs Tk 80.\n";}
};
class Pack2: public Menu{
public:
void pack() const {
cout<<"Package 2 has 3 slices of bread, jelly, banana and chai. It costs Tk 40.\n";}
};
class Pack3:public Menu {
public:
void pack() const {
cout<<"Package 3 has 1 plate of khichri. It costs Tk 60.\n";}
};
int main()
{
Menu * list[4];
Menu * ptr;
int choice;
for (int i=0;i<4;i++)
{
cout <<"(1) Pack1 (2) Pack2 (3) Pack3 :\n";
cin>>choice;
switch(choice)
{
case 1: ptr = new Pack1;
break;
case 2: ptr = new Pack2;
break;
case 3: ptr = new Pack3;
break;
default: ptr = new Menu;
break;
}
list[i] = ptr;
}
for(int i=0;i<4;i++)
list[i]->pack();
return 0;
}

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Compilation time: 0.42 sec, absolute running time: 0.16 sec, cpu time: 0.01 sec, memory peak: 5 Mb, absolute service time: 0,66 sec