c++ polymorphism

#include "Account.h"
int main() {
    Account user;
    EnglishAccount user1;
    int setting = 0;
    cout << "This is language setting" << endl;
    cout << "1. Korean 2. English" << endl;
    cin >> setting;
    switch (setting) {
    case 1: {
        Account *p = &user;
        p->Today();
        break;
    }
    case 2: {
        Account *p = &user1;
        p->Today();
        break;
    }
    }