#include <iostream>
using namespace std;

int main() {
    // Can the person enter the club.
    bool enter_club=false;

    // Does the person have id.
    char has_id='n';

    // How old is the person.
    int age=0;

	
    // Ask the person if they have id.
    cout << "Got your ID? (Y/N): ";
    cin >> has_id;
    
    // If the person has ID, ask them their age.
    if(has_id=='y' || has_id=='Y') {
        cout << "Ok. You got ID...so how old are you? " << endl;
        cin >> age;
        
        // If the person is over 21 let them enter.
        if(age>=21)
            enter_club=true;
    }
    
    // If the person is able to enter the club.
    if(enter_club)
        cout << "Welcome to the club!" << endl;
    else cout << "Sorry, come back when you are 21." << endl;
    
    return 0;    
}