void main() {
  // 1. Set Ticket Prices
  double ticketPrice = 50.0;
  int soldTickets = 50;
  
  // 2. Calculate Revenue
  double totalRevenue = ticketPrice * soldTickets;
  print("Total revenue from initial sales: \$${totalRevenue}");
  
  // 3. Track Age Group
  int customerAge = 65;
  if (customerAge >= 60) {
    print("Customer is $customerAge years old: Senior discount applies!");
  } else if (customerAge < 12) {
    print("Customer is $customerAge years old: Child discount applies!");
  } else {
    print("Customer is $customerAge years old: Regular price applies.");
  }
  
  // 4. Loop through Ticket Sales
  print("\n--- Simulating Ticket Sales ---");
  while (soldTickets < 200) {
    soldTickets += 20; // Selling 20 tickets per iteration
    print("Tickets sold so far: $soldTickets");
  }
  
  // 5. Ternary Operator for Late Fee
  int purchaseHour = 22; // 10 PM
  double finalPrice = (purchaseHour > 20) ? ticketPrice + 10.0 : ticketPrice;
  print("\nPurchase at hour $purchaseHour. Final price per ticket (with possible late fee): \$$finalPrice");
}