Random random = new Random();
int daysUntilExpiration = random.Next(12);
int discountPercentage = 0;

if (daysUntilExpiration <= 10 && daysUntilExpiration > 5){
    Console.WriteLine("Your subscription will expire soon. Renew now!");
} else if (daysUntilExpiration <= 5 && daysUntilExpiration > 1){
    discountPercentage = 10;
    Console.WriteLine($"Your subscription expires in {daysUntilExpiration} days.");
    Console.WriteLine($"Renew now and save {discountPercentage}%");
} else if (daysUntilExpiration <= 1 && daysUntilExpiration > 0) {
    discountPercentage = 20;
    Console.WriteLine("Your subscription expires within a day.");
    Console.WriteLine($"Renew now and save {discountPercentage}%");
} else if (daysUntilExpiration == 0){
    Console.WriteLine("Your subscription has expired");
}