# Header
print("==== Age Calculator ====")
# Ask user to enter their birth year
birth_year = input("Enter your birth year (e.g. 1990): ")
# Calculate the user's age
current_year = 2023
age = current_year - int(birth_year)
# Print the user's age
print("You are " + str(age) + " years old.")
# Footer
print("Thank you for using the age calculator!")